Saturday, June 13, 2026

Pentagon hazardous materials incident prompts lockdown evacuation

On Thursday, June 11, 2026, the Pentagon was placed under a shelter-in-place order after its safety systems detected a potential air quality issue, prompting deployment of hazmat crews from the Pentagon Force Protection Agency and Arlington County Fire Department. Multiple floors and corridors were locked down or evacuated while testing was conducted. Subsequent testing confirmed no hazard existed and normal operations resumed by early afternoon, indicating the incident was a false alarm.