U.S. Air Force Airman 1st Class Tychaun Kingston, 44th Aircraft Maintenance Unit crew chief, performs maintenance on an aileron switching valve as Tech. Sgt. Timothy Peeler, 372nd Training Squadron, Detachment 15, F-15 Eagle aircraft maintenance instructor, observes April 24, 2017, at Kadena Air Base, Japan. The aileron switching valve is one of the hydraulic systems on the F-15 Eagle. (U.S. Air Force photo by Senior Airman Lynette M. Rolen)