United States v. Aguilera

Court of Appeals for the Ninth Circuit·Decided August 24, 2026·No. 25-3366·Published

Opinion

FOR PUBLICATION

UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

UNITED STATES OF AMERICA, No. 25-3366 D.C. No.

Plaintiff - Appellee,

3:23-cr-00217-

WHA-1

v.

FERNANDO AGUILERA, AKA Fernando Aguilera, OPINION

Defendant - Appellant.

Appeal from the United States District Court for the Northern District of California William Alsup, District Judge, Presiding Argued and Submitted December 1, 2025 San Francisco, California Filed August 24, 2026

Before: Johnnie B. Rawlinson and Gabriel P. Sanchez, Circuit Judges, and Jennifer G. Zipps, Chief District Judge. *

Opinion by Judge Zipps;

Partial Dissent by Judge Rawlinson

*

The Honorable Jennifer G. Zipps, United States Chief District Judge for the District of Arizona, sitting by designation.

2 USA V. AGUILERA

SUMMARY **

Criminal Law

The panel affirmed Fernando Aguilera’s conviction following a bench trial for being a felon in possession of ammunition under 18 U.S.C. § 922(g)(1), vacated his sentence, and remanded for resentencing.

Affirming the district court’s denial of Aguilera’s motion to suppress, the panel held that the district court properly found that Aguilera’s seizure was supported by reasonable suspicion that Aguilera was the shooter who fired a gun outside a bar, where the district court considered officers’ collective knowledge, and the totality of the circumstances, including that the officers apprehended Aguilera based on reports of specific criminal activity and the fact that Aguilera closely matched an eyewitness description in physical aspects and temporal proximity to the gunshots.

The panel vacated the sentence because the district court applied the wrong legal standard and relied on impermissible factors in denying Aguilera a two-level reduction for acceptance of responsibility under U.S.S.G. § 3E1.1(a). It is apparent from the record that the district court believed either that a defendant must unconditionally plead guilty to be eligible for the reduction, or that it could consider and hold against Aguilera his constitutionally protected conduct—i.e., his motion to suppress, motions to dismiss the indictment, and decision to go to trial to preserve those issues for appeal. This reflects a misapprehension of the

**

This summary constitutes no part of the opinion of the court. It has been prepared by court staff for the convenience of the reader.

USA V. AGUILERA 3

legal standard. The panel held that the error was not harmless.

Judge Rawlinson dissented from the portion of the opinion vacating the sentence and remanding for resentencing. In her view, the district court did not misapprehend the law or hold Aguilera’s constitutionally protected conduct against him in denying his request to reduce his sentence for acceptance of responsibility, and disagreed with the majority that the declared error was not harmless.

COUNSEL

Elizabeth R. Berenguer (argued) and Kelsey Davidson, Assistant United States Attorneys; Sophia Cooper, Attorney; Merry J. Chan, Assistant United States Attorney, Chief, Appellate Section; Criminal Division; Craig H. Missakian, United States Attorney; Office of the United States Attorney, United States Department of Justice, San Francisco, California; for Plaintiff-Appellee. Lisset M. Pino (argued), Taylor Fatherree, and Daniel P. Blank, Assistant Federal Public Defenders; Jodi Linker, Federal Public Defender; Office of the Federal Public Defender, San Francisco, California; for Defendant- Appellant.

4 USA V. AGUILERA

OPINION

ZIPPS, Chief District Judge:

This case arises from a police encounter following reports of an active shooter in San Francisco’s Mission District. Defendant-Appellant Fernando Aguilera was convicted of being a felon in possession of ammunition under 18 U.S.C. § 922(g)(1). His appeal raises two issues. First, Aguilera appeals the district court’s denial of his motion to suppress the ammunition evidence, asserting officers did not have reasonable suspicion to conduct a warrantless seizure of his person. Second, Aguilera appeals his sentence, arguing the district court erred by denying him a offense level reduction for acceptance of responsibility and relying on impermissible sentencing factors. 1 We have jurisdiction under 28 U.S.C. § 1291 and 18 U.S.C. § 3742. We affirm Aguilera’s conviction but vacate his sentence and remand for resentencing.

I. Factual Background Shortly before 2:00 a.m. on April 7, 2023, the San Francisco Police Department received two SpotSpotter alerts of multiple gunshots in the Mission District. 2 The alerts originated near the El Trebol Bar, located on the corner

1 Aguilera acknowledges that our precedent forecloses his appeal of the district court’s denial of his motions to dismiss the indictment on constitutional grounds. See United States v. Duarte, 137 F.4th 743, 748 (9th Cir. 2025) (en banc); United States v. Latu, 479 F.3d 1153, 1156 (9th Cir. 2007) (collecting cases). Accordingly, we summarily affirm the district court’s denial of these motions. We discuss these motions only as they pertain to Aguilera’s sentencing challenge. 2 ShotSpotter is a service that detects gunshots and alerts local police to the precise coordinates where the gunshots were detected.

USA V. AGUILERA 5

of 22nd and Capp Streets. Several officers arrived near the El Trebol bar around 2:00 a.m., within minutes of receiving the reports of gunshots at that location. A witness, later identified as Briseno, said he saw the shooter—a Hispanic male wearing a blue jacket—fire into the air and head westbound down 22nd Street. A second person outside El Trebol pointed officers in the same direction and said, “they went that way.” Officers Hurtado and Frisk saw a person walking away in that direction, and Officer Frisk saw the suspect turn left onto Mission Street.

Officers Grech and Hurtado took off after the suspect in their police vehicle. When they turned left onto Mission, Officer Hurtado confirmed that one of the two people within view matched the description provided by Briseno. Officer Grech stopped her vehicle near the suspect, and the two exited and ordered the suspect to stop and get on the ground. The suspect took off running, and Hurtado chased after him. During the chase, the suspect turned towards Officer Hurtado and “punched his arm out” in what Hurtado believed to be a shooting motion. Hurtado ducked behind a trashcan briefly, losing sight of him. Officer Hurtado then resumed the chase, following the suspect down 23rd Street until again losing sight of him at the intersection of 23rd and Bartlett.

Officer Hurtado broke off the chase outside of a restaurant on the southeast corner of the intersection and reentered Officer Grech’s vehicle, which had caught up with him. As they drove up Bartlett Street, Officer Grech broadcast that the suspect was hiding on Bartlett Street, somewhere between 22nd and 23rd. Officer Hurtado provided an expanded description of the fleeing suspect— “Hispanic male, dark skin, long hair, blue jacket, and jeans, 6 USA V. AGUILERA

and black shoes,” which was broadcast to the rest of the officers.

Several officers were in the area searching for the suspect. Around 2:08 a.m., Officer Frisk approached a person standing in the doorway of the restaurant on the southeast corner of the intersection of Bartlett and 23rd and asked if she saw where “the guy that was running went to.” She told Officer Frisk and Officer Hurtado that she saw him run to the intersection, attempt to hide by a parked car, and then relocate behind the white fence at the northeast corner of the intersection. The person confirmed the man was still hidden there.

A few seconds later, Officer Frisk peered through a large gap in the fence, shined his flashlight directly at Aguilera, and spotted him lying in a narrow strip of weeds. Officer Frisk pointed his firearm at Aguilera and yelled, “Hands!” Aguilera was detained at 2:08 a.m., roughly two blocks from the location of the alerts.

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