A U.S. Air Force 18th Security Forces Squadron patrol vehicle guards F-15 Eagle fighter aircraft parked on the flightline Sept. 27, 2016, at Kadena Air Base, Japan. Response force members of the 18th SFS guard Kadena’s aircraft and watch for unauthorized activity or personnel both day and night, ensuring uninterrupted aircraft operations. (U.S. Air Force photo by Senior Airman Peter Reft)