Patrolling the perimeter
Airman 1st Class Luis Valentin, 9th Security Forces Squadron installation entry controller, opens a gate for the all-terrain vehicles to drive through Nov. 4, 2016, at Beale Air Force Base, California. On coyote patrols security forces' personnel inspect the fence line and gates on the outskirts of the installation. (U.S. Air Force photo/Airman Tristan D. Viglianco)

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Photo by: Airman Tristan D. Viglianco |  VIRIN: 161104-F-ZH169-241.JPG