                               In the

    United States Court of Appeals
                 For the Seventh Circuit
                     ____________________
No. 18-2796
UNITED STATES OF AMERICA,
                                                   Plaintiff-Appellee,
                                 v.

HERMAN D. ADAIR,
                                               Defendant-Appellant.
                     ____________________

         Appeal from the United States District Court for the
                     Central District of Illinois.
            No. 1:17-cr-10053 — James E. Shadid, Judge.
                     ____________________

       ARGUED APRIL 11, 2019 — DECIDED JUNE 3, 2019
                ____________________

   Before SYKES, SCUDDER, and ST. EVE, Circuit Judges.
    SCUDDER, Circuit Judge. Officer Curtis Squires received a
crime-in-progress notification while patrolling in Blooming-
ton, Illinois during the late evening hours of September 21,
2017. More details followed. The 911 operator informed Of-
ficer Squires that a caller from the Tracy Drive Apartments
reported a group of persons outside her apartment engaged
in suspicious activity. The caller added that a short black male
wearing a hoodie had a gun in his front pocket. Arriving
2                                                 No. 18-2796

moments later, Officer Squires saw the group, approached to
see what was going on, and observed that Herman Adair
roughly fit the 911 caller’s description and had a large bulge
in his front pants’ pocket. Adair sought to evade Officer
Squires by moving and weaving throughout the larger
group—trying to put others between Officer Squires and him-
self. Officer Squires then stopped and patted down Adair,
finding a gun in his front pocket. The district court concluded
that all of this respected the Fourth Amendment. We agree
and affirm.
                               I
    The question presented turns on whether, under the total-
ity of circumstances facing Officer Squires at the Tracy Drive
Apartments, he had reasonable suspicion to stop and frisk
Adair under the standard announced in Terry v. Ohio, 392 U.S.
1 (1968).
    The full facts emerged during a suppression hearing in the
district court. A few additional points warrant emphasis. Of-
ficer Squires received the emergency notification just after
10:45 p.m. The additional details came in a message transmit-
ted by the 911 operator to the computer in Officer Squires’s
police car. According to the message, the 911 caller provided
her first name and phone number and stated that she had just
been outside and saw the group smoking, drinking, and en-
gaged in “very suspicious activity.” The caller added that,
while she did not recognize anyone as living in the Tracy
Drive Apartments, she walked by a short black male with a
hoodie and saw he had a black gun in his front pocket. While
driving to the location, Officer Squires spoke to the 911 oper-
ator and confirmed this information.
No. 18-2796                                                   3

   Officer Squires knew the Tracy Drive Apartments well. A
seven-year veteran of the Bloomington Police Department, he
had responded to the area many times to address reports of
theft, burglaries, fights, and shots fired. He also knew local
gangs to have a presence at the apartment complex. At the
suppression hearing, Officer Squires testified to being con-
cerned that, upon arriving at the Tracy Drive Apartments, he
would encounter someone who did not live at the complex
but was nonetheless outside drinking and carrying a gun. The
concern, he underscored, was the product of seeing many
times over that alcohol and guns do not mix well.
    It took Officer Squires no more than two minutes to drive
to the apartment complex. Upon exiting his car, he saw about
ten people standing outside, just as the 911 caller reported. As
he approached the group his attention focused on Herman
Adair because he was relatively short and the only person (on
an unusually warm September night) wearing long sleeves.
Everyone else was wearing t-shirts and tank tops. Officer
Squires testified he had encountered Adair many times before
that night and immediately recognized him as not only some-
one who did not live at the Tracy Drive Apartments, but also
the only person wearing clothing resembling the 911 caller’s
description. Officer Squires further testified that he knew
Adair had a prior felony conviction. He added that each of his
prior encounters with Adair had been respectful.
    When Officer Squires first approached, Adair was stand-
ing near the middle of the larger group. As Officer Squires got
closer, however, Adair began to move away, weaving
through the group and putting other people in between him-
self and the officer. Officer Squires believed Adair was trying
to evade and avoid him. He eventually got close enough to
4                                                   No. 18-2796

Adair to see a conspicuous, large bulge in the front pocket of
his jeans. Seeing the bulge raised even more concern because,
as Officer Squires testified, he recalled the 911 caller reported
seeing a gun protruding from a man’s pocket.
    Officer Squires reacted by asking Adair to step away from
the group. He then asked for permission to search him. When
Adair declined, Officer Squires told him that, due to the cir-
cumstances, he was going to pat him down for weapons. The
ensuing frisk revealed a hard object that Officer Squires im-
mediately recognized as a gun in Adair’s front pocket. The
firearm was a black and loaded Sig Sauer P230 handgun. Of-
ficer Squires testified that he knew at the time of the stop and
pat down that Adair’s prior felony conviction prevented him
from possessing a firearm.
    The government charged Adair with unlawful possession
of a firearm by a felon, a violation of 18 U.S.C. § 922(g). Adair
moved to suppress the firearm, arguing that Officer Squires
lacked the reasonable suspicion required to stop and search
him. The district court denied the motion. Adair then pleaded
guilty, reserving the suppression issue for appeal, and the dis-
trict court sentenced him to 46 months’ imprisonment.
                               II
   Adair now renews his argument that Officer Squires
lacked the reasonable suspicion necessary for the investiga-
tory stop and protective pat down. Adair places substantial
emphasis on a series of post-arrest photographs showing that
he was not wearing a hoodie on the night in question. He sees
the absence of the hoodie as controlling because it shows he
did not match the 911 caller’s description and thus eliminated
No. 18-2796                                                    5

any basis for Officer Squires to focus on him and then to stop
and search him.
    Adair is right on one point but mistaken on another. He is
right that the photos show no hoodie. But Adair goes too far
in suggesting that the case begins and ends with that obser-
vation. Not so. The totality of the circumstances facing Officer
Squires—including Adair’s wearing clothing that generally
resembled the 911 caller’s description of the man with a gun
and his clear evasion of Officer Squires—provided the reason-
able suspicion necessary to authorize the stop and pat down.
                               A
    The Supreme Court’s decision in Terry v. Ohio teaches that
the Fourth Amendment permits law enforcement to conduct
a brief investigative stop when an officer reasonably suspects
a person is engaged in criminal behavior. See 392 U.S. at 21–
22; Navarette v. California, 572 U.S. 393, 396–97 (2014). While
“inarticulate hunches” are not enough, Terry, 392 U.S. at 22,
“’reasonable suspicion is a lower threshold than probable
cause’ and ‘considerably less than preponderance of the evi-
dence,’” United States v. Ruiz, 785 F.3d 1134, 1141 (7th Cir.
2015) (quoting United States v. Bullock, 632 F.3d 1004, 1012 (7th
Cir. 2011)).
    The controlling inquiry requires an objective examination
of the “totality of the circumstances known to the officer at the
time of the stop, including the experience of the officer and
the behavior and characteristics of the suspect.” Ruiz, 785 F.3d
at 1141 (quoting Bullock, 632 F.3d at 1012). Whether an officer
had reasonable suspicion for an investigatory stop “is de-
pendent upon both the content of the information possessed
by police and its degree of reliability.” See Navarette, 572 U.S.
6                                                   No. 18-2796

at 397 (quoting Alabama v. White, 496 U.S. 325, 330 (1990)).
Taking account of the “the whole picture” the officer “must
have a particularized and objective basis for suspecting the
particular person stopped of criminal activity.” United States
v. Cortez, 449 U.S. 411, 417–18 (1981).
    These standards find straightforward application to Of-
ficer Squires’s stop of Adair. Consider the context and circum-
stances facing Officer Squires. He responded to a 911 call of
suspicious activity occurring late in the evening at a location
known for criminal activity. He arrived within two minutes
of receiving the crime-in-progress alert, and this quick re-
sponse allowed him to benefit from and react to information
freshly provided by the 911 caller. Nobody disputes that Of-
ficer Squires, in responding to the call, properly approached
the group gathered in front of the apartment complex to learn
more about what was happening. It was then that he saw a
relatively short man wearing long sleeves—clothing that
stood out from what others were wearing and most closely
matched the 911 caller’s description. It was also then, after Of-
ficer Squires recognized Adair as a convicted felon who did
not live at the apartments, that Adair reacted by seeking to
evade Officer Squires and thus avoid contact with the police.
    The Fourth Amendment required no more to justify a
stop. “[S]ufficient probability, not certainty, is the touchstone
of reasonableness under the Fourth Amendment.” New Jersey
v. T.L.O., 469 U.S. 325, 346 (1985) (quoting Hill v. California,
401 U.S. 797, 804 (1971)). Based on the facts known at the time,
Officer Squires reasonably concluded that Adair both suffi-
ciently matched the 911 caller’s description and reacted in a
way that justified a Terry stop. While the 911 caller’s infor-
mation did not align exactly with what Officer Squires saw
No. 18-2796                                                     7

upon arriving, perfection is not the measuring stick. See Heien
v. North Carolina, 135 S. Ct. 530, 536 (2014) (explaining that
“[t]o be reasonable is not to be perfect, and so the Fourth
Amendment allows for some mistakes on the part of govern-
ment officials”). The judgment facing Officer Squires in the
circumstances afforded him fair leeway: the Fourth Amend-
ment did not require him, upon seeing that Adair was wear-
ing a long-sleeved athletic shirt but not (literally) a hoodie, to
disregard information from the 911 caller that proved largely
corroborated. Nor did it require him to disregard Adair’s eva-
sion and instead return to his police car and leave the scene.
The decision to stop Adair was well within reason.
     Adair begs to differ by pointing to Florida v. J.L., 529 U.S.
266 (2000). There the Supreme Court held that the police
lacked reasonable suspicion for an investigatory stop when
they acted on an anonymous tip providing nothing more than
a barebones assertion that an individual standing at a bus stop
and wearing a plaid shirt was carrying a gun. The tip included
nothing else, including no suggestion of an ongoing emer-
gency or crime. See id. at 268–69. Accordingly, the Court had
little difficulty concluding that such a “bare report of an un-
known, unaccountable informant who neither explained how
he knew about the gun nor supplied any basis for believing
he had inside information about [the defendant]” fell short of
authorizing a Terry stop. Id. at 271.
    The circumstances in J.L. are a far cry from those Officer
Squires encountered here. He responded to much more than
an anonymous and threadbare tip. To the contrary, the 911
caller gave her first name and phone number and reported
personally observing smoking and drinking and engaging in
“very suspicious activity" late at night by a group of people
8                                                    No. 18-2796

who did not live at the Tracy Drive Apartments. The caller
also reported seeing one particular person—a short black man
wearing a hoodie—with a gun in his front pocket. In respond-
ing, Officer Squires found the scene closely aligned with the
caller’s description.
    There is even more. All of this happened late at night in a
high-crime area and against the backdrop of Adair’s evasive
conduct upon seeing Officer Squires. See United States v. Pat-
ton, 705 F.3d 734, 738 (7th Cir. 2013) (explaining that an inves-
tigatory stop was justified, in part, because it occurred during
“essentially the middle of the night”); United States v. Tinnie,
629 F.3d 749, 752 (7th Cir. 2011) (considering “the time and
the location of the [Terry] stop”); United States v. Oglesby, 597
F.3d 891, 893 (7th Cir. 2010) (explaining that an investigatory
stop was justified, in part, because it occurred late at night in
a high-crime area); see also Illinois v. Wardlow, 528 U.S. 119,
124–25 (2000) (explaining that “[n]ervous, evasive behavior is
another pertinent factor in determining reasonable suspicion”
under Terry); United States v. Ocampo, 890 F.2d 1363, 1368 (7th
Cir. 1989) (considering the suspect’s demeanor and behavior
as part of a Terry-stop analysis). On these facts, Officer Squires
had reasonable suspicion to stop Adair.
    Adair’s only response is to focus on isolated details. He
contends, for example, that the Tracy Drive Apartments was
not an area of high crime. Adair insists that the true high-
crime area was about 900 feet away in an area adjacent to the
apartment complex. Even if Adair is right as a technical mat-
ter, he overstates the point. Officer Squires was on firm—and
certainly reasonable—ground believing that he was respond-
ing to an emergency 911 call in a high-crime area. The
No. 18-2796                                                    9

circumstances did not compel any more precise assessment as
he arrived at the scene and reacted to what he saw.
   Adair also posits that the actions of Officer Fosdick, an-
other officer who responded to the call to the Tracy Drive
Apartments, contradict Officer Squires’s claim that he reason-
ably suspected Adair was the man described by the 911 caller.
Adair points out that, upon arriving at the apartments, Officer
Fosdick asked for and received consent to pat down two other
men standing outside the apartment complex. He also sought
and received permission to search the purse of a woman
standing outside but stopped short of seeking consent to con-
duct a pat down because the woman was wearing tight cloth-
ing incapable of concealing a weapon.
    The record provides no reason to doubt these observations
about Officer Fosdick’s conduct. But we fail to see how they
compel a conclusion about Officer Squires and his response to
the 911 call. By its terms, Terry requires an individualized in-
quiry—an assessment of the facts and circumstances perti-
nent to a specific person—here, Herman Adair. Or, to put the
point more directly, the Supreme Court has cautioned us to
avoid the exact “sort of divide-and-conquer analysis” Adair
urges. See United States v. Arvizu, 534 U.S. 266, 274 (2002) (ex-
plaining that the totality-of-the-circumstances approach man-
dated by Terry precludes evaluating certain factors in isola-
tion from each other).
                               B
    We come, then, to Officer Squires’s decision to frisk Adair.
See United States v. Brown, 188 F.3d 860, 864 (7th Cir. 1999)
(explaining that not every investigatory stop will automati-
cally entitle law enforcement to conduct a protective pat
10                                                 No. 18-2796

down). In the course of an authorized investigatory stop, an
officer may proceed to conduct a protective pat down when
confronting facts and circumstances giving rise to a reasona-
ble suspicion that the individual has a weapon and otherwise
poses a danger. See Terry, 392 U.S. at 27.
    Upon arriving at the Tracy Drive Apartments, Officer
Squires reasonably concluded that Adair matched the 911
caller’s description of the armed man who was part of a group
drinking and acting suspiciously outside the apartment com-
plex. And this was especially so after Adair reacted to Officer
Squires’s presence by seeking to evade and avoid all contact
with him. Officer Squires then saw for himself the bulge in
Adair’s front pocket, precisely as the 911 caller reported. At
that point, no more was required to justify Officer Squires’s
belief that Adair was armed and dangerous. The subsequent
protective pat down did not violate Adair’s Fourth Amend-
ment rights.
    So, too, must we reject Adair’s view that this case aligns
with United States v. Williams, 731 F.3d 678 (7th Cir. 2013). In
Williams we considered an anonymous 911 report that a large
group of people with guns were making noise late at night in
a known high-crime area. See id. at 684. We concluded that
the 911 call permitted an investigatory stop of those present
but, without more, did not justify an officer’s decision to go
further and randomly pat down one of persons detained. See
id. at 686–88. Altogether lacking was the individualized sus-
picion necessary to the more intrusive step of frisking some-
one’s person: “[T]he 911 caller did not provide any infor-
mation that would have identified Mr. Williams [the defend-
ant] as one of the individuals in possession of a weapon” and
“the Court cannot see how the group’s general behavior could
No. 18-2796                                                  11

possibly support a reasonable suspicion that Mr. Williams,
himself, was armed and dangerous.” Id. at 687.
    The circumstances here are analogous in only a limited re-
spect—Officer Squires encountered a group gathered late at
night in a high-crime area. But the similarities with Williams
end there. Unlike in Williams, the 911 caller here also reported
gun possession by a specific person (a short black man wear-
ing a hoodie) that reasonably led Officer Squires to focus on
Herman Adair and then to witness both his evasive behavior
and the large bulge in his front pocket. In no way did Officer
Squires randomly pluck Adair from a larger group and then,
without any reasonable basis for believing Adair may be
armed and dangerous, subject him to a pat down. Put most
simply, what was absent in Williams—particularized (and not
just general) suspicion that a specific individual was armed
and dangerous—was present here.
                        *      *      *
    In the end, we see this as a case where Officer Squires
acted swiftly and reasonably in response to a 911 call. While
he did not encounter anyone wearing a hoodie, what he did
see aligned largely with the caller’s report. From there the to-
tality of circumstances supplied Officer Squires with the indi-
vidualized and particularized suspicion necessary to stop and
frisk Adair. We therefore AFFIRM.
