150205-N-IS680-032 CHESAPEAKE, Va. (Feb. 5, 2015) Members of training teams line the walls as they observe Chesapeake Police Department officers Justin Garcia and Sean Maddox clear a hallway during an active shooter drill at Naval Auxiliary Landing Field Fentress as part of Exercise Solid Curtain-Citadel Shield 2015. The exercise tests response and coordination between Navy emergency response personnel and their civilian counterparts in an active shooter situation. (U.S. Navy photo by Mass Communication Specialist 2nd Class Alysia R. Hernandez/Released)