A shelter-in-place order was issued at the Pentagon on Wednesday following the detection of a hazardous material and subsequent air quality concerns. According to a Department of Defense spokesperson, firefighters responded to the scene to investigate the incident. The nature of the hazardous material has not yet been disclosed. The order prompted a temporary evacuation of portions of the building as a precautionary measure. Authorities are currently working to assess the situation and mitigate any potential risks. No injuries have been reported at this time, and further details are expected as the investigation progresses. Normal operations are expected to resume once the all-clear is given.