Airmen from the 2nd Civil Engineer Squadron perform "buddy checks'' after donning mission oriented protective posture gear during a 2nd CES training exercise at Barksdale Air Force Base, Louisiana, May 20, 2021. The exercise showcased contingency skills such as: land navigation, self-aid buddy care and chemical, biological, radiological and nuclear preparedness. (U.S. Air Force photo by Senior Airman Jacob B. Wrightsman)
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