The U.S. Naval Academy in Annapolis, Maryland, was placed on lockdown on September 11, 2025, following reports of threats made against the military school, prompting swift action from law enforcement.

Law enforcement responded quickly to the threats, with local and federal agencies involved in managing the situation, which was described as developing and cautious.

The lockdown involved armed police, ambulance staging, and instructions for students to stay inside and lock doors, with some dormitory evacuations at Bancroft Hall, the largest college dormitory housing over 1,600 midshipmen.

Authorities did not disclose specific details about the threats, the nature of suspicious activity, or injuries, but responded with heightened security measures.

Security personnel from Naval Support Activity Annapolis and local law enforcement responded to the incident, emphasizing that no specific threat details or injuries have been publicly disclosed.

After thorough checks, officials confirmed there was no credible or active threat, and the situation was declared safe, with no gunfire or active danger reported.

The lockdown was lifted early on September 12, 2025, after authorities confirmed the area was safe and the incident was resolved.

The incident occurred amid a broader wave of security concerns at U.S. educational institutions, including multiple historically Black colleges, which also issued lockdowns or canceled classes due to threats.

These heightened security alerts reflect a pattern of increased caution at schools across the country, although some institutions reported no actual threats.

The response at the Naval Academy included cooperation with local police to ensure safety, with officials describing the situation as out of caution and ongoing investigations.

The academy emphasized that the threats were taken seriously, leading to precautionary lockdowns, but no active danger was confirmed, and the situation was resolved promptly.