Pentagon Locks Down After Air-Quality Alert Triggers Hazmat Response

Overview

• Building safety systems detected an abnormal air-quality reading on Thursday, and the Pentagon activated hazardous-materials protocols that included orders for people in affected areas to shelter in place.
• Specialized response teams and Arlington County firefighters were deployed to investigate and to support building occupants during the containment effort.
• Unconfirmed reporting said the response included isolating portions of the building—reportedly floors two through five in corridors four to seven—and that some people were removed while responders wore gas masks and full chemical-protective suits.
• Pentagon security officials said additional tests are under way and that results could take hours before the agency can identify the cause or assess any health impact.
• The Pentagon uses automated air-safety systems and standing hazmat procedures to protect thousands of workers, and officials have promised public updates once testing clarifies the situation.