Air Force Master Sergeant Daniel Chrisco, an active shooter exercise player searches the halls of the 773rd Civil Engineer Squadron for unlocked office doors during an exercise March 13. The Security Forces Squadron on Joint Base Elmendorf-Richardson conducts regular no-notice tests of offices’ active shooter mentalities around base.

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Size: 1731px × 1155px
Photo credit: © Chuck Little / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: active, air, america, archive, armed, army, defence, force, forces, military, navy, reportage, service, serviceman, servicemen, shooter, soldier, states, united, usa