Patrolling the perimeter
Senior Airman David Gill, 9th Security Forces Squadron base defense operation controller, and Airman 1st Class Luis Valentin, 9th SFS installation entry controller, drive an all-terrain vehicle alongside a fence line Nov. 4, 2016, at Beale Air Force Base, California. The perimeter of Beale is 26 miles and is broken up into six sectors. (U.S. Air Force photo/Airman Tristan D. Viglianco)

Download Image: Full Size (1.46 MB)
Photo by: Airman Tristan D. Viglianco |  VIRIN: 161104-F-ZH169-177.JPG