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Osan kicks off exercise with active shooter scenario

Staff Sgt. Patrick Formiller, 51st Security Forces Squadron first responder, marks simulated evidence with a glow stick during an active shooter exercise at Osan Air Base, Republic of Korea, May 6, 2016. Osan’s defenders responded to test their ability to neutralize an active shooter. (U.S. Air Force photo by Tech. Sgt. Travis Edwards/Released)

VIRIN: 160506-F-LU738-440.JPG
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