Master Sgt. John Zywicki, a telecommunications operations chief with the 416th Theater Engineer Command (TEC), reacts to a scenario during active shooter training heald at the 416th TEC headquarters in Darien, Ill. The training provided by Special Agent Culloton gave Soldiers tools to react and protect themselves in an active shooter situation, Aug. 6, 2016. ( Army photo by Spc. Brianna Saville/Released)

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Size: 3852px × 2848px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

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