Staff Sgt. Crystal Sheffield (right) and Airman 1st Class Amber Hoedebeck, 623rd Air Control Flight weapons directors, control a mission by using a Base Air Defense Ground Environment system at Naha Air Base, Japan. Kadena Air Base's 623rd ACF is in charge of commanding and controlling 85 percent of local F-15 daily training as well as real-world operations, providing overlapping command and control support with AWACS aircraft and providing primary support when AWACS is not available. (U.S. Air Force photo/Staff Sgt. Steven Nabor)