51st SFS Defenders prepare for Beverly Midnight 15-03
Master Sgt. Oscar Ochoa, 51st Security Forces Squadron flight chief, tests his M50 Joint Service General Purpose Field Mask in preparation for the readiness exercise, Beverly Midnight 15-03, on Osan Air Base, Republic of Korea, Aug. 18, 2015. The exercise is used to test Osan Airmen’s abilities during a heightened state of readiness while providing combat ready forces for close air support, air strike control, counter air, interdiction, theater airlift and communications in the defense of the ROK. The M50 mask is designed to provide continuous head-eye-respiratory, chemical, biological, and radiological particulates protection. (U.S. Air Force photo/Senior Airman Kristin High)