Airman Benjamin Baker, left, 51st Logistic Readiness Squadron Transportation Management Office packing and crating apprentice, simulates taunting Senior Airman Brandon Busch, 51st LRS TMO cargo apprentice, during an active shooter exercise as part of a combat readiness course on Osan Air Base, Republic of Korea, June 18, 2014. Airmen from the 51st Security Forces Squadron learned about different active shooter scenarios during the classroom portion of the training. (U.S. Air Force photo/Senior Airman David Owsianka)