Flightline Defenders
U.S. Air Force Airmen 1st Class Matthew Knighten and Jose Olivera, 18th Security Forces Squadron response force members, stand guard on the flightline Sept. 27, 2016, at Kadena Air Base, Japan. Knighten and Olivera provide constant watch and security over aircraft and other assets on the flightline, ensuring aircraft operations remain unhindered by unauthorized activity or personnel. (U.S. Air Force photo by Senior Airman Peter Reft)