U.S. Air Force Staff Sgt. Lakeesha Porter, a bioenvironmental engineering technician with the 1st Special Operations Operational Medical Readiness Squadron, right, performs a test to identify a simulated chemical agent during an annual anti-terrorism/force protection exercise at Hurlburt Field, Florida, Aug. 19, 2020. Members of the 1st Special Operations Wing conducted an exercise that simulated a terrorist attack on base to provide inspection teams the opportunity to assess how the base would respond in a real-world attack. Participants were permitted to take off their masks during designated portions of the exercise out of safety concerns that surpassed the concern of transmitting coronavirus disease 2019. (U.S. Air Force photo by Senior Airman Dennis Spain)
Senior Airman Dennis Spain
24.0-70.0 mm f/2.8
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