
493 F.Supp. 558 (1981)
AERO CORPORATION, Plaintiff,
v.
DEPARTMENT OF THE NAVY, Defendant.
Civ. A. No. 79-2944.
United States District Court, District of Columbia.
March 4, 1981.
*559 Roger N. Boyd, Jean-Pierre Swennen, Frederick W. Claybrook, Jr., Crowell & Moring, Washington, D.C., for plaintiff.
Charles F. C. Ruff, U. S. Atty., Royce C. Lamberth, Cameron McGowan Currie, Asst. U. S. Attys., Washington, D.C., for defendant; Jeffrey N. Eisenstein, John G. Judy, William K. Mahn, Dept. of the Navy, Washington, D.C., of counsel.

MEMORANDUM
OBERDORFER, District Judge.

I
This case involves the claim of plaintiff, Aero Corporation ("Aero"), that the determination of defendant, Department of the Navy ("Navy"), to make a sole-source award of a contract to perform the Service Life Extension Program ("SLEP") on twenty C-130 aircraft to Lockheed-Georgia Company ("Lockheed") was improper. Aero also seeks mandamus to compel the Navy to refer the question of Aero's capability to perform the contract for determination by the Small Business Administration.
*560 Aero filed this action on October 30, 1979, four days after filing a bid protest with the General Accounting Office ("GAO"). Following hearings on Aero's request for a temporary restraining order on October 30 and 31, the Court declined to grant any injunctive relief because the Navy represented that award of the sole-source contract to Lockheed was not imminent. The parties were directed to agree to an expedited discovery schedule to permit an early decision on the merits by the GAO. Counsel negotiated a stipulation providing for (1) expedited discovery and (2) an agreement by the Navy not to award the contract until November 30, 1979, or until the GAO decided Aero's protest, whichever was sooner. By Order of November 1, 1979, the Court approved the stipulation and requested that the GAO expedite its consideration of the protest to provide an interim report on or before November 16, 1979.
On November 16, the GAO notified the Court and the parties that a decision on the protest would not be available before December 18, 1979. Consequently, the Court held hearings on November 19 and 20, 1979, to consider whether relief was necessary pending a decision by the GAO. At those hearings, Aero renewed its request for a preliminary injunction; the Navy reasserted its position that the SLEP program, and the Navy's consequent ability to meet its operational requirements, would be jeopardized if it did not award a contract by November 30, 1979. The Navy represented that (1) no aircraft would be "inducted" into SLEP before May, 1980, and (2) any contract with Lockheed could be terminated without prejudice to Aero if the GAO or the Court so directed.
On the basis of the Navy's representations and arguments of counsel, the Court entered an Order on November 21 denying Aero preliminary relief. The Order also embodied a Declaratory Judgment that the Navy had breached its statutory duty under 10 U.S.C. § 2304 and 2310 to facilitate review by the Court and the GAO of its decision to make a sole-source award. The Order further declared that the Navy "should not enjoy any equitable or legal advantage on account of the award of the contract, its performance in whole or in part, or the mere passage of time between now and December 31, 1979." The Order left the Navy free to enter into a letter contract with Lockheed for SLEP. The Navy and Lockheed executed such a contract on November 30, 1979. The contract called for the performance of SLEP on 13 planes, with an option to increase the total to 20 C-130's.
The Order of November 21, 1979, as further explained by Memorandum of November 28, 1979, was predicated on an indication from GAO that it could render a decision in Aero's bid protest, Docket No. B-194445.3 by December 18. The relief granted was intended to preserve the equities, while permitting the Navy and Lockheed to begin necessary pre-performance activities pending the GAO decision.
On December 14, the GAO, through its Associate General Counsel, informed the Court that it would not be able to render a decision on December 18, but was "making every effort to have a decision by December 21." At a hearing held that afternoon to consider the effect of the delay, plaintiff sought (1) to extend the effect of the Declaratory Judgment beyond December 31, if the hearing on the preliminary injunction, then scheduled for December 21, were delayed; (2) to prevent the Navy from exercising its option to expand the initial SLEP contract from 13 to 20 planes; (3) to limit the contract already in force to the preparation of parts, for which Aero has not sought to compete; and (4) to require the Navy to prepare a competitive bid package in the event that the contract was ruled invalid.
In response, the Navy represented that it would limit the option for the additional planes to the procurement of parts only. The Navy also asserted that in the event that SLEP installation were ultimately opened for competitive bidding, Lockheed would accrue no competitive advantage from its part-performance of the letter contract, since any parts or plans prepared by Lockheed would become the property of the U.S. Government.
*561 In view of these representations, the Court found that Aero was suffering no prejudice from the prospective delay in the GAO decision, and declined to modify the relief already granted.
On December 21, the GAO reached its decision on Aero's bid protest, a copy of which is attached hereto as Appendix I. The GAO found that the Navy's decision to award a sole-source contract to Lockheed for 13 planes was not arbitrary. On the same day, a hearing was held on Aero's further motion for a preliminary injunction, at which it was decided to conduct a final hearing on the merits on February 4 and 5, 1980. An Order filed December 21, 1979, amended the Order of November 21 to reflect additional representations by the Navy that (1) none of the C-130 aircraft would be "inducted" into SLEP before February 5; and (2) that the Navy would not exercise the option for the installation portion of SLEP for the seven additional aircraft before February 5, 1980.
On January 30, 1980, Aero filed a Pretrial Brief. On February 1, 1980, the Navy filed a motion for summary judgment. The Court has elected to treat the parties' submissions as cross-motions for summary judgment, supported by exhibits, affidavits and testimony which eliminate any material factual dispute. Having reviewed these submissions, and on the basis of the hearings and entire record of this case, the Court finds that the Navy is entitled to partial summary judgment; its determination that competitive procurement of SLEP for the first 20 C-130's was reasonable and supported by substantial evidence. Aero is entitled to partial summary judgment on its claim that under the circumstances of this case, the Navy prevented Aero from obtaining timely and meaningful review of the Navy's procurement decision before this Court and the GAO. The Navy is also entitled to summary judgment on Aero's assertion that its capability to perform SLEP must be referred to the Small Business Administration for determination.
On February 8, 1980, Aero filed a motion pursuant to Rule 21, Fed.R.Civ.P., to add the Lockheed Corporation as a defendant. Both Lockheed and the Navy have opposed the motion, which the Court will deny without prejudice to its renewal by Aero if the presence of Lockheed as a party ultimately proves appropriate in order to accord Aero complete relief.

II

Findings of Fact:
1. The program at issue is the Service Life Extension Program ("SLEP") of forty-nine Navy and Marine Corps C-130 series aircraft.
2. SLEP is a program to replace or restore parts of the aircraft to extend its service life to 25,000 flight hours.
3. SLEP provides for the replacement of approximately thirty-nine parts regardless of whether they are in immediate need of service, with the exception of three parts that are inspected and replaced only if necessary. SLEP also involves several miscellaneous tasks, including upgrading field manuals and related functions.
4. Three aircraft series are included in the program: the C-130 itself, as well as the KC-130's (tankers used by the Marine Corps), and EC-130's. The EC-130's are so-called "TACAMO aircraft" that are used for communications with fleet ballistic submarines.
5. SLEP involves both the procurement and the installation of parts required to extend the life of the C-130 aircraft. The dispute underlying this action involves Aero's interest in competing for the installation phase of SLEP.
6. The Navy's C-130 fleet is currently maintained through periodic induction for Standard Depot Level Maintenance ("SDLM") and through drop-in repair. Under the SLEP program, the Navy plans to perform SDLM concurrently with SLEP.
7. Under SDLM, each aircraft is inspected and parts are replaced as necessary. Drop-in repair is performed by the SDLM contractor on aircraft in need of repair prior to the next regular SDLM induction.
*562 8. Aero has won all competitive NAVY SDLM procurements for the C-130 and has been the exclusive SDLM contractor for the Navy in the United States for the past nine years. Aero's current SDLM contract with options extends into 1983. The Navy proposes to award contracts to Lockheed on a sole-source basis for SLEP and concurrent SDLM with respect to forty-nine aircraft. This plan will foreclose Aero's SDLM business opportunity to render SDLM service with respect to these C-130's.
9. Navy planning for SLEP began in January of 1977 with the establishment of a C-130 SLEP program subject to formal procurement planning in accordance with the Defense Acquisition Regulation ("DAR") § 1-2100. This required a procurement plan to be prepared to present an analysis of the program and to document the technical, small business, policy, operational, and other procurement considerations.
10. On February 10, 1978, the Cognizant Field Activity ("CFA") for the C-130 aircraft, the Naval Aircraft Rework Facility ("NARF"), forwarded to the Naval Air Systems Command ("NAVAIR") a detailed Work Requirements Specification for SLEP which identified the parts requiring replacement during SLEP.
11. On February 24, 1978, Lockheed was provided with a copy of the work specification and commissioned to prepare two Engineering Change Proposals ("ECP") under contract with the Navy, one ECP for accomplishing SLEP at a facility other than Lockheed utilizing kits prepared by Lockheed, the other ECP for accomplishing SLEP entirely by Lockheed without the use of kits.
12. On May 23, 1978, the Navy's project manager for the C-130 SLEP program notified the other team members that he would recommend to the NAVAIR Acquisition Program Review Board ("APRB"), which is composed of the senior decision-making authorities within NAVAIR, that Lockheed perform the entire SLEP program "in house," i. e., under a sole-source contract. The Project Manager based his recommendation on the grounds that (1) the cost of a kit program would substantially exceed that of an integrated program in which Lockheed manufactured and installed the parts; and (2) a kit program would delay by at least one year the induction of the first aircraft into SLEP, which was then scheduled for May, 1979. This delay was alleged to be critical because many of the aircraft would require interim repairs.
13. At a meeting on June 9, 1978, the APRB agreed that NAVAIR should contract with Lockheed for initial performance of SLEP on a non-competitive basis and that NAVAIR should develop an alternative plan for transition to a competitive procurement for the installation of kits after two years. The APRB anticipated meeting again in four weeks to consider revisions to the procurement plan consistent with its conclusions. That meeting did not take place.
14. On August 14, 1978, Lockheed submitted the Engineering Change Proposals requested in February, 1978. The ECP's included separate schedules for sole-source and competitive procurement of SLEP.
15. The sole-source schedule proposed by Lochkeed in its August ECP's provided for induction of the first aircraft into Lockheed one year after the award of the contract.
16. The competitive schedule proposed by Lockheed in its August ECP's provided for the availability of the first trial kit twenty-five months after the award of the contract. It provided for the first production kit, which it acknowledged could be installed by a contractor other than Lockheed, in forty-six months.
17. On March 13, 1979, Aero advised the Navy's SLEP project manager of its interest in participating in SLEP. Along with its letter, Aero submitted an analysis based on the February 10, 1978, work specifications for performing all the SLEP tasks. The Aero analysis claimed that Aero had the expertise to perform the installation of SLEP parts without technical direction or assistance from Lockheed. The Aero letter also protested any sole-source procurement of SLEP from Lockheed.
*563 18. Of the forty-four tasks Aero identified from the SLEP work specification, Aero had performed thirty-nine during SDLM without the use of kits by manufacturing or ordering the parts directly and employing installation instructions developed by Aero and approved by the Navy.
19. The revised SLEP work specification identified thirty-nine installation tasks. Aero has performed thirty-seven of the thirty-nine SLEP tasks.
20. On March 22, 1979, pursuant to the APRB directive of June, 1978, the project manager of SLEP circulated a memorandum proposing that the Navy utilize a directed (sole-source) procurement to Lockheed for SLEP of the first ten aircraft with a phased transition thereafter to competitive installation with kits provided by Lockheed.
21. On March 26, 1979, Aero filed a bid protest with the GAO, Docket No. B-194445, alleging that the Navy was "poised to make a sole-source award for the C-130 SLEP work without the benefit of free and open competition." The Navy responded on April 30, contending that the protest was "based upon incorrect information." The Navy contended that "NAVAIR has not as yet made a decision as to the procurement method to be utilized in fulfilling the C-130 SLEP requirements . . .. On June 5, 1979, the GAO dismissed Aero's protest as premature.
22. Meanwhile, on April 25, 1979, the SLEP project manager circulated an implementation plan for SLEP prepared "in accordance with the decision of the Acquisition Program Review Board of 9 June 1978 . . .. This plan called for directed procurement to Lockheed for (1) complete modification of ten aircraft under SLEP; (2) the non-recurring engineering effort necessary for the preparation of kits; (3) three trial kits; and (4) an option for installation of the trial kits.
23. On July 12, 1979, the Navy rejected Aero's proposal on the technical ground that it did not meet the requirements for "unsolicited" proposals under DAR § 4-901.
24. On June 29, 1979, the APRB convened again to consider the C-130 SLEP procurement plan. The plan submitted for the APRB's approval was, in all major respects, the implementation plan of April 25.
25. The June, 1979, plan assumed contract award in July, 1979, and proposed two schedules for competitive installation of kits. The first schedule, characterized as "Optimistic," provided for the induction of the first aircraft under a competitively awarded kit installation contract forty-two months after the award of the initial contract to Lockheed. Under that schedule, the first competitive aircraft would be inducted in January, 1983. The other schedule, characterized as a "Normal Flow Time" schedule, was based on the Lockheed schedule and anticipated induction of the first aircraft in sixty-four months.
26. Under the "Optimistic" schedule, seventeen months would elapse between the induction of the last plane under the sole-source contract with Lockheed and the induction of the first plane under a competitively awarded installation contract (August, 1981, to January, 1983). Under the "Normal Flow Time" schedule, thirty-nine months would elapse between the induction of the last plane by Lockheed and the first plane inducted under a competitively awarded installation contract (August, 1981, to November, 1984).
27. The APRB approved the plan to complete all planes after the first ten in a kit program based on the "Optimistic" schedule, but directed the project manager to address the schedule risks inherent in the plan.
28. The plan, as approved by the APRB, was approved on July 13, 1979, by Admiral Petersen, Commander of NAVAIR, and was forwarded to the Chief of Naval Material ("CNM") for final approval. At the direction of the CNM, NAVAIR officials met with Lockheed on August 28, 1979, to consider the feasibility of meeting the "Optimistic" schedule. Lockheed indicated that the schedule of its August, 1978, ECP had been predicated on the award of the contract by February 1, 1979. Because of the *564 delay and the increased long lead times for certain SLEP parts, Lockheed indicated that it could only meet a schedule which provided for the induction of the first competitive installation in sixty-four months and that it could not meet the "Optimistic" schedule.
29. The Lockheed schedule is based on the assumption that the procurement of all parts for SLEP begins after contract award. The estimates for procurement of long lead items are based on the general industry procurement time from the date of order to the date of delivery.
30. During the August 28, 1979, meeting, NAVAIR representatives asked Lockheed whether they could reduce the time required for delivery of kits. Lockheed responded that its schedule was the best achievable.
31. Also on August 28, 1979, the Navy requested the Air Force Plant Representative at Lockheed to evaluate Lockheed's proposed timetable. The representative reported that Lockheed's schedule was "basically realistic, albeit conservative". The representative reported that the engineering effort, trial installation, rework, and verification may have been overstated by as much as twenty percent. The representative also reported, "It is believed that the contractor may be exaggerating impact of these delays and changes on long leadtime material, since most of that processed to date will be diverted to regular production requirements . . .. [I]t appears to this office that the contractor can and will have the same flexibility to divert landing gear and other components from and to subsequent production lot releases." In fact, Lockheed engaged in substantial precontractual effort with respect to the procurement of SLEP parts, and the Navy and Lockheed have now contracted for the SLEP parts for the initial twenty aircraft to be inducted into SLEP.[1]
32. Aero had filed a second bid protest with the GAO on July 10, 1979, Docket No. B-194445.2, alleging that the Navy "has clearly decided" to award the SLEP contract on a sole-source basis. Although the APRB plan had been approved on July 13, 1979, by the Commander of NAVAIR, the Navy nevertheless contended to GAO on August 28, 1979, that Aero's protest was premature. On October 17, 1979, GAO dismissed Aero's second protest as premature.
33. On September 14, 1979, the CNM returned the procurement plan to NAVAIR for revision in light of the schedule proposed by Lockheed at its August 28 meeting with the Navy.
34. On September 25, 1979, the NAVAIR APRB was again convened to consider changes in the procurement plan. The APRB approved a procurement plan that called for the sole-source modification of all 49 C-130's by Lockheed.
35. On October 15, 1979, the final SLEP procurement plan was approved by Admiral Petersen. The plan called for the directed procurement to Lockheed of all forty-nine aircraft for concurrent SLEP and SDLM and an initial contract award for the first thirteen planes by November 20, 1979, with induction of the first aircraft in May, 1980. In the intervening six months, Lockheed would draft detailed engineering specifications, procure the necessary parts, and prepare the work area.
*565 36. The final procurement plan was forwarded to the CNM for his approval on October 15, 1979. On October 24, 1979, the CNM approved the final procurement plan with the understanding that "C-130 series aircraft scheduled for SLEP/SDLM at Lockheed will be considered for induction at the then current SDLM contractor's facility in the event a substantial delay occurs in the scheduled SLEP and a SDLM is determined necessary to sustain the material condition of the aircraft."
37. On October 24, 1979, the contracting officer filed formal "Determination and Findings" that the proposed contract could be negotiated without formal advertising pursuant to 10 U.S.C. § 2304(a)(10), which provides an exemption from a competitively advertised procurement when "it is impracticable to obtain competition by formal advertising." The contracting officer found that because of the long period of time required to prepare and manufacture kits necessary for the installation of SLEP by a contractor other than Lockheed, only Lockheed could perform SLEP "with an acceptable level of technical risk in a time frame to prevent an adverse impact on fleet operational readiness."
38. The Navy concluded that the delay generated by relying on a kit program would prevent it from meeting its operational requirements. The C-130s are TACAMO aircraft that provide communications with fleet ballistic missile submarines. Delay in inducting the TACAMO aircraft would interfere with the "TIP II" modification schedule, in which communications gear for the aircraft is to be replaced concurrently with SLEP. Additionally, delay in performing SLEP would increase the risk that these aircraft would be grounded, thus preventing the Navy from meeting its operational responsibilities.
39. The Navy concluded that because of the material condition of the C-130 and KC-130 aircraft, delay in inducting them into SLEP would increase the risk that they would have to be grounded or removed from service for unscheduled maintenance. Loss of these aircraft would jeopardize the Navy's ability to meet its operational requirements.
40. The Navy's planning for a kit modification program contemplated a kit usable by any qualified depot level contractor, and did not focus on use by contractors with substantial experience with the C-130 by virtue of SDLM or similar service. However, the Navy determined that preparation of kits tailored to experienced C-130 contractors would not materially reduce the time required to prepare kits for competitive procurement.
41. On November 30, 1979, the Navy awarded a contract to Lockheed for the SLEP and accompanying SDLM for three EC-130, nine KC-130, and one C-130 model aircraft, subject to the Navy's representations and the Court's orders with respect to the induction of those aircraft for installation purposes. The contract contained an option for seven additional aircraft (two EC-130's and five KC-130's). The Lockheed contract forms which specify the data required to be supplied by Lockheed to the Navy (DD 1423 forms) had been signed by the responsible government official on March 27, 1979.
42. The option for the purchase of parts for the seven option aircraft was exercised by the Navy in January, 1980. The Navy has represented to the Court that the option for installation of parts in the option aircraft will not be exercised until October, 1980.
43. On December 21, 1979, the GAO issued its decision in Aero's third protest. The GAO concluded that a limited award to Lockheed of thirteen aircraft on a sole-source basis was proper in the circumstances. In support of this conclusion, the GAO made the following findings: (1) The Navy did not abuse its discretion in estimating that the technical risk in performing SLEP is greater than that in performing SDLM; (2) While SLEP might be performed using something less than a comprehensive kit by experienced C-130 maintenance contractors, the Navy reasonably concluded that even these contractors would have to employ some form of kit; (3) The GAO was *566 "aware of no legal requirement for the Navy to provide kits specially tailored to a limited group of maintenance contractors, such as Aero, regardless of whether Navy could have or should have arranged the kits earlier;" and (4) The Navy reasonably concluded that the development of kits is not feasible in the time frame for performing SLEP.
44. The GAO recommended that the Navy review the sole-source determination before exercising the option for the seven additional aircraft in the letter contract and further review it before awarding a follow-on contract for all or part of the other twenty-nine aircraft.
45. Despite expedited consideration the GAO required approximately two months to consider Aero's third bid protest and issue its findings and conclusions. Because the Navy urged that any delay in awarding a contract for SLEP might seriously jeopardize the national defense, the parties, at the direction of the Court, substantially telescoped discovery and other pre-trial proceedings, and the Court has expedited its decision. Nevertheless, the time from complaint to decision consumed four months. Review of Aero's claim by the GAO and the Court was handicapped by the schedule constraints imposed by the Navy.

III


Conclusions of Law:

A.
The Court's scope of review in this case, as in disappointed bidder cases, is limited. As our Court of Appeals elaborated in M. Steinthal and Co. v. Seamans, 147 U.S. App.D.C. 221, 455 F.2d 1289 (1971):
The court is obligated to restrict its inquiry to a determination of whether the procurement agency's decision had a reasonable basis. This inquiry must fully take into account the discretion that is typically accorded officials in the procurement agencies by statutes and regulations. Such discretion extends not only to the evaluation of bids submitted in response to a solicitation but also to determination by the agency with respect to the application of technical, and often esoteric, regulations to the complicated circumstances of individual procurements.
* * * * * *
The court must refrain from judicial intervention into the procurement process unless the actions of the executive officials are without any rational basis.
147 U.S.App.D.C. at 233, 238, 455 F.2d at 1301, 1306 (footnote omitted.)
Since Steinthal, the Court of Appeals has further refined the standard of review. In Kentron Hawaii, Ltd. v. Warner, 156 U.S. App.D.C. 274, 277, 480 F.2d 1166, 1169 (1973), the Court held that to prevail, plaintiffs "adversely affected by the award of government contracts" must:
bear a heavy burden of showing either that (1) the procurement official's decisions on matters committed primarily to his own discretion had no rational basis, or (2) the procurement procedure involved a clear and prejudicial violation of applicable statutes or regulations.
Although there is an overriding public interest, expressed by statute, to foster competition in procurement to the maximum practical extent, see Wheelabrator Corporation v. Chafee, 147 U.S.App.D.C. 238, 455 F.2d 1306 (1971), the public is also concerned with procurement that is expeditious and undisrupted. See M. Steinthal & Sons v. Seamans, 147 U.S.App.D.C. at 232, 455 F.2d at 1300. This is especially true in military procurements. See Cessna Aircraft Company v. Brown, 452 F.Supp. 1245, 1253 (D.D.C.1978).
Review by the GAO, an agency with "special competence and experience" in the complicated area of procurement regulation, Wheelabrator Corporation v. Chafee, 147 U.S.App.D.C. at 248, 455 F.2d at 1316, plays an integral role in this process. It is well-established that the Court must accord significant deference to the findings and conclusions of the GAO; ordinarily, they are not to be overturned unless the Court finds them to be arbitrary and capricious. See M. Steinthal & Sons v. Seamans, *567 147 U.S.App.D.C. at 237, 455 F.2d at 1305. Indeed, our Court of Appeals has twice reversed injunctions granted by the district courts in procurement cases because the district courts failed to find that GAO conclusions, upon which they refused to rely, were "arbitrary and capricious." M. Steinthal & Sons v. Seamans, 147 U.S.App.D.C. at 230, 455 F.2d at 1298; Schoonmaker v. Resor, 144 U.S.App.D.C. 250, 252, 445 F.2d 726, 728 (1971). However, a court has "the last word and should not shrink from exercise of its power when the conditions justify an injunction." Wheelabrator Corporation v. Chafee, 147 U.S.App.D.C. at 248-49, 455 F.2d at 1316-17. As the Court of Appeals for our circuit noted in Steinthal, there may be instances where a district court will find illegality that the GAO refused to recognize or to correct. In such cases, it is the clear duty of the district court to ensure that procurement activities are carried out in accordance with the applicable statutes and regulations. 147 U.S.App.D.C. at 237-38, 455 F.2d at 1305-06.
In this case, plaintiff's claim has been reviewed by both the GAO and the Court. The Court has reviewed the voluminous documentary submissions of the parties, as well as the GAO, and has heard the testimony of six witnesses.
This record demonstrates that the Navy's decision to award the first SLEP contract to Lockheed was not unreasonable, is supported by substantial evidence, and is not a clear and prejudicial violation of existing statutes.
Aero has ably and elaborately demonstrated that there is a difference of opinion about the technical complexity of SLEP, the manner in which the modification might be performed, and the level of expertise and technical assistance that a depot level contractor would require to carry out SLEP. The potential cost savings that competition might provide are manifest. It is uncontroverted, for example, that Aero's hourly labor rate is only one-third of Lockheed's. Moreover, it may well be that the Navy has not given sufficient weight to its long-range need to maintain a broad, competitive pool of experienced contractors and to lessen its dependence upon a single contractor, in this case, the developer and sole manufacturer of the C-130, Lockheed. It may not have fully recognized, or responded to, the public interest, including national security interest, in competition for procurement, as generally mandated by Congress. The testimony of Captain Ferraro, Assistant Commander of NAVAIR for contracts, revealed that, throughout this procurement, the Navy was not enormously sensitive to its statutory duty to provide competition to the maximum practical extent. It did not apply to this element of its "mission" the same energy and ingenuity that it did and does to other responsibilities. Yet it is even more plain that it is not the role of the Court to second-guess the Navy, particularly as to its operational requirements, its judgments about the technical complexity of its projects, or the level of risk that it must accept. Captain Ferraro's testimony also made clear that the Navy's ultimate judgment that (1) the technical complexity of SLEP made some form of kits necessary if the modification were performed by a contractor other than Lockheed; and (2) the projected time schedule for the development of kits would not permit the Navy to meet its operational requirements, was made in honesty and good faith and was not unreasonable. Each of its conclusions was supported by substantial evidence.

B.
The conclusion by the GAO and the Court that the Navy's sole-source decision for the first SLEP contract was not unreasonable, however, does not constitute approval of the entire procurement process. The Navy did consider means by which the SLEP contract might have been completed. But the Navy (1) failed to meet its statutory duty and (2) failed to permit the GAO and the Court an adequate opportunity to determine whether the Navy had met that duty.
In its decision, the GAO stated that it was "aware of no legal requirement for the Navy to provide kits specially tailored to a *568 limited group of maintenance contractors, such as Aero . . .." This conclusion was erroneous. The Navy, as the GAO put it, "is required to seek competition where it can find it." In this case, competition might have been found among the experienced C-130 depot level maintenance contractors such as Aero, even if it might not feasibly have been found among a larger group. And if providing kits specially tailored to such a limited group of maintenance contractors is a feasible way of seeking competition, the Navy has a legal duty to provide such "tailored kits."
The mandate of section 2304(g) of the Act, 10 U.S.C. § 2304(g), is clear  competition is required to the maximum extent feasible by solicitation of proposals "from the maximum number of qualified sources consistent with the nature and requirements of the supplies or services to be produced." DAR § 3-101(d) provides that negotiated procurements must be on a competitive basis "to the maximum practical extent." If the nature of the services in SLEP is such that providing limited kits is the only means of obtaining any competition at all, the Navy must do so, if it can be done practically.
As to the first 20 aircraft, the Navy has sufficiently justified as not unreasonable or legally impermissible its decision that the use of kits tailored to experienced C-130 contractors would not have been feasible in the time frame which is immediately imminent. However, it has not satisfied the GAO or the Court that it now has a reasonable basis for precluding competition for SLEP procurement with respect to the balance of the procurement.
Additionally, on the basis of the whole record in this case, the Court reaffirms its finding of November 21, as explained by the Memorandum of November 28, that the Navy breached its statutory duty to facilitate GAO and judicial review. Although the record supports no imputation of bad faith on the part of the Navy, it is clear that as early as June, 1978, and certainly as early as April, 1979, the Navy had determined to employ sole-source procurement for the first aircraft to be inducted into SLEP. The Navy maintains that this decision never ripened into a formal decision, approved by the final Navy decision-making authority, the CNM, until October, 1979. This may be true. But such formalistic notions of finality must bend to the realities of this case: The decision to employ sole-source for the first C-130's was essentially irreversible at the latest in April, 1979, and both the Navy and Lockheed were proceeding on the solid assumption that at least some of the planes would be modified by Lockheed. Throughout this period, the only change in the procurement plan was to increase the number of planes to be modified sole-source by Lockheed. At the same time, the Navy was aware of Aero's interest in competing for some or all of the contract and its intention to challenge any sole-source decision before the GAO. The Navy had ample opportunity, without disruption of its planning, to submit its decision as to the first thirteen planes for GAO review, or at least not to urge deferral of GAO's consideration of Aero's protest. As the Court noted in its November 28 Memorandum, for example, the Navy "might have filed an interim procurement plan as to the first thirteen aircraft, updating it as necessary pursuant to DAR § 1-2100.5 when the Navy settled on a plan for the remaining C-130's." Indeed, the ability of the Navy to have submitted its SLEP plans for GAO and judicial consideration in phases is amply demonstrated by the facts of this case: although the procurement plan approved by the Navy in October, 1979, called for the sole-source procurement of SLEP for all 49 C-130's, the contract ultimately executed with Lockheed covered only the first 20 planes. The Navy-Lockheed actions in the six months between April and October, 1979, served no material planning or operational purpose of the Navy, and had as its principal apparent effect frustration of Aero's opportunity to obtain considered review of the decision by GAO and this Court. The Navy freely and strongly invoked national defense concerns in pressing the GAO and the Court to act in great haste, to review in days or weeks a *569 decision which the Navy required over two years to make, creating the impression that the Court had a dramatic choice between doing its duty under the law and the Constitution or jeopardizing the Navy's ability to defend the Nation. In these circumstances, the Navy's failure to facilitate GAO consideration of Aero's earlier protests was a breach of its duty, and seriously interfered with the ability of the GAO and of this Court to perform their duties.
Neither of these failures by the Navy justifies interference with its plans for the first 20 planes. However, they do require the fashioning of a remedy that will guarantee first that the Navy further considers all possibilities for competing some or all of SLEP for the remaining planes and second that Aero have a full and early opportunity to protest any decision to procure SLEP for these planes on a sole-source basis in time for deliberate GAO and judicial review. Accordingly, an accompanying Order will require the Navy to reconsider its decision not to compete SLEP after it acquires experience from the initial SLEP installations, and notify all potential competitors for SLEP, including Aero, at the earliest practicable time, of any practically irreversible plans to undertake further SLEP procurement on a sole-source basis.

C.
The Court has further considered the parties' cross-motions for summary judgment on Aero's claim that the issue of Aero's capability to perform SLEP be submitted to the Small Business Administration for determination. For the reasons set forth in the GAO opinion, the Court finds that SBA referral is inappropriate, and that the Navy is entitled to summary judgment on this claim.

D.
There remains for consideration Aero's motion to add Lockheed Corporation as a defendant, which was filed on February 8, 1980, three days after the hearing in this case. Aero maintains that because the Navy's decision not to prepare kits relies ultimately on Lockheed's estimates about how soon kits could be prepared, Lockheed's participation as a defendant is essential in order to afford Aero complete relief.
There can be no doubt about the Court's authority to join Lockheed as a defendant, even at this late stage in the proceedings. Rule 21, Fed.R.Civ.P., expressly provides that parties may be added "at any stage of the action and on such terms as are just." The fact that hearings have been completed does not render Aero's motion untimely; district courts frequently have added parties after the trial has been completed. See, e. g., Hayward v. Clay, 456 F.Supp. 1156 (D.S.C.1977); Reichenberg v. Nelson, 310 F.Supp. 248 (D.Neb.1970).
However, no useful purpose would be served by adding Lockheed as a defendant now. On a number of occasions, most recently at the beginning of the hearing on February 4, the Court inquired of counsel for Aero why it had not joined Lockheed as a defendant. At that time, Aero reiterated that "[o]ur principal beef is with the United States Government . . . not with Lockheed and this is why we chose only the United States Government as the defendant in this case." Transcript of Proceedings, February 4, 1980, at page 5. Nothing has occurred since then to alter the character of this action. While it is true that any subsequent decision the Navy may make regarding the availability of kits will depend in part on schedule estimates provided by Lockheed, those estimates may be reviewed for their reasonableness at a later date. And if evidence is adduced that Lockheed, for whatever reasons, has exaggerated the kit schedule, there will be time enough to add Lockheed as a defendant if it is appropriate and necessary for complete relief. The Court at all times retains power to add a necessary party or to otherwise tailor its judgments in order to afford complete relief to the plaintiff. See Hayward v. Clay, 456 F.Supp. at 1161. Accordingly, Aero's motion will be denied without prejudice.

ORDER AND JUDGMENT
In consideration of the whole record of this case, including affidavits, exhibits, depositions, *570 and the record of the hearings held on February 4 and 5, 1980, and for the reasons set forth in the accompanying Memorandum, it is, this 4th day of March, 1980, hereby
ORDERED: That the Navy's motion for summary judgment on Aero's claim for mandamus to compel the issue of its capability to perform SLEP to be submitted to the Small Business Administration for determination is GRANTED; and Aero's motion for summary judgment on the same claim is DENIED; and it is
FURTHER ORDERED: That the Navy's motion for summary judgment is GRANTED in part, in that the Navy's decision to procure SLEP on a sole-source basis for the first twenty (20) C-130's was not unreasonable and was supported by substantial evidence; and it is
FURTHER ORDERED: That Aero's motion for summary judgment is GRANTED in part, in that the Navy acting in good faith but without sufficient attention to its duty to procure competitively, hindered Aero from obtaining, and the GAO and this Court from conducting, adequate review of the Navy's sole-source determination; and it is
FURTHER ORDERED: That the Navy honor the commitment made for it by Captain Neil P. Ferraro in his affidavit filed February 11, 1980; and it is
FURTHER ORDERED: That the Navy will continue in good faith to consider the feasibility of competitive procurement for the remaining planes to undergo SLEP, including the use of kits tailored to depot level contractors experienced with the C-130; and, will closely monitor Lockheed's initial performance to determine whether its original assessment of technical risks and the need for kits remains reasonable; and, should the Navy find it necessary to exercise any option or enter into any new contract with Lockheed prior to the completion of such study, any such contract shall be made terminable upon a finding by the Navy that competition, under practicable conditions, is feasible; and it is
FURTHER ORDERED: That the Navy shall give Aero at least six months written notice of (1) its intention to enter into any new contract for the sole-source procurement of SLEP from Lockheed, or (2) the formation of practically irreversible plans to undertake further SLEP procurement from Lockheed on a sole-source basis; and it is
FURTHER ORDERED: That Aero's motion to add the Lockheed Corporation as a defendant is DENIED without prejudice.

APPENDIX

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NOTES
[1]  At the hearing on February 5, 1980, the Navy introduced the testimony of a Lockheed official that the parts so procured were "production configuration" parts that were so machined and drilled that they could be installed only by Lockheed, and were not suitable for inclusion in kits for installation by potential SLEP contractors such as Aero, or by Aero as SDLM contractor. The effect of this parts procurement was to substantially increase the time advantage for a sole-source procurement of SLEP over competition-by-kit procurement, since many of the parts necessary for SLEP were already in hand when Lockheed was awarded the letter contract in November, 1979. Thus, Lockheed's pre-contractual procurement substantially exaggerated the schedule advantages of a sole-source SLEP over competition. Lockheed suffered no serious risk by its parts procurement, since the parts ordered in anticipation of being awarded the SLEP installation contract could have been diverted to C-130 production had the Navy determined to proceed competitively. Under separate contracts Lockheed was producing about 30 new C-130's per year.
