Medical crews and hazmat teams were dispatched to the Pentagon this morning for a reported hazardous materials incident.
Initial reports reference “a positive anthrax system alert” around 9 a.m., along with “a suspicious odor” and at least one individual with chest pain in the inner courtyard. They also refer to a need for further lab testing.
About 2,500 personnel were sheltering in place around 10:30 a.m.
A large emergency response, including hazmat teams from both the Pentagon Force Protection Agency and the Arlington County Fire Department, was dispatched to the incident.
ACFD remains on scene as of publication time, though CNN reported shortly after noon that the incident was a “false alarm.”
A Pentagon spokesman described the incident as “an air quality issue necessitating precautionary measures.”
The Pentagon has sophisticated systems to ensure the safety of the building and its occupants. Those systems have detected an air quality issue necessitating precautionary measures until we determine its significance.
The Department is executing standard protection protocols, including a shelter-in-place order for the affected area. Response teams are in place and ready to support building occupants.
ACFD units, including our Hazardous Materials Team, are currently operating at the Pentagon in support of PFPA’s Hazmat Team during a hazardous materials incident. pic.twitter.com/7qzOzbwh8W
— Arlington Fire & EMS (@ArlingtonVaFD) June 11, 2026
New: Here's video of fire and EMS units from @ArlingtonVaFD and neighboring jurisdictions that have been staging at the Pentagon for a hazmat incident involving an odor and possibly detectors going off. They have been in a long standby mode waiting for lab testing. @ARLnowDOTcom… https://t.co/fb89sDrUMd pic.twitter.com/MZEiVFs49V
— Dave Statter (@STATter911) June 11, 2026
