Predator maintenance
Tech. Sgt. Rebecca Hatfield (left), an instructor with Field Training Detachment 26 of the California Air National Guard's 163rd Maintenance Group, reviews procedures Oct. 15 with Staff Sgt. Carlos Barrera to install an oil pump on the engine of an MQ-1 Predator unmanned aircraft. Sergeant Barrera is a crew chief assigned to the 163rd Reconnaissance Wing at March Air Reserve Base, Calif. Airmen with Det. 26 train active duty, Reserve and Air National Guard personnel on Predator maintenance operations. (U.S. Air Force photo/Senior Airman Matt Smith)