El Paso County Sheriff’s Office Special Weapons and Tactics deputies make their way down a hallway at Schriever Air Force Base, Colorado, during an active shooter exercise Wednesday, June 7, 2017. Opinicus Vista 17-2, which ran May 30-June 8, is Schriever’s largest exercise of the year and levied relationships with local community agencies to respond to a natural disaster and an active shooter with a hostage. ( Air Force photo/Christopher DeWitt)

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Size: 2400px × 1597px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: schriever