A staff sergeant assigned to the 60th Security Forces Squadron enters a structure in an attempt to clear the building of a simulated active shooter threat April 13, 2016, at Travis Air Force Base, California. The training event was part of the annual requirement for security forces Airmen to train on active shooter incidents. ( Air Force photo by Staff Sgt. Charles Rivezzo)

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Size: 4000px × 3860px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: afb, air, airmen, base, enforcement, force, forces, law, m4, military, police, security, training, travis