U. S. Marine Corps Cpl. Efrain Flores, hostage roll player, right, passes the phone to Staff Sgt. Rangy Rivera, active shooter roll player, left, during an active shooter training scenario as a part of exercise Semper Durus at the Communication Training Center on Camp Pendleton, Calif., April 12, 2017.

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Size: 1732px × 1155px
Photo credit: © Ted Small / Alamy / Afripics
License: Licensed
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