Osan kicks off exercise with active shooter scenario

OSAN AIR BASE, Republic of Korea -- A 51st Security Forces Squadron military working dog scours a building with its trainer during active shooter exercise at Osan Air Base, Republic of Korea, May 6, 2016. Osan’s defenders neutralized the simulated active shooter minutes after they entered the building. The scenario officially kicked off the week-long readiness exercise, Beverly Herd 16-01. (U.S. Air Force photo by Tech. Sgt. Travis Edwards/Released)