Osan continues strong in Exercise Beverly Herd 17-3
A U.S. Air Force Post Attack Reconnaissance Team member checks M-8 chemical detection paper following a simulated attack during Exercise Beverly Herd 17-3 at Osan Air Base, Republic of Korea, Sept. 19, 2017. The paper determines whether the immediate area is contaminated with chemical agents. (U.S. Air Force photo by Staff Sgt. Alex Fox Echols III)

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Photo by: Staff Sgt. Alex Fox Echols III |  VIRIN: 170919-F-DY859-032.JPG