Aviation Electrician's Mate (abbreviated as AE) is a United States Navy occupational rating. Originally established in 1942 as AEM, the Aviation Electrician’s Mate rating was changed to AE in 1948. Aviation Electrician's Mates maintain electrical and instrument systems, including power generation, conversion, and distribution systems; aircraft batteries; interior and exterior lighting; electrical control of aircraft systems, including hydraulic, landing gear, flight control, utility, and power plant engine, flight and non-instrument-type indicating and warning systems; automatic flight control and stabilization systems; aircraft compass systems; attitude reference systems; and inertial navigation systems. The primary "A" School training for AE's is located at Naval Aviation Technical Training Center aboard NAS Pensacola. There was another "A" School for AE's in NAS Jacksonville from which the last class graduated in May 2008. Secondary "C" Schools are located at various locations nationwide with the most common being NAS Lemoore, CA and NAS Oceana, VA.