In a response to the dangers of insurgent warfare, Randolph AFB has assigned a new squadron that will eventually train more than 500 airmen annually to fly and operate remote-controlled aircraft. The May 20, 2010 reactivation of “The Phantom Knights” — Randolph's 558th Flying Training Squadron — will make Randolph officially the Air Force's only site to offer undergraduate, or beginning, training in remotely piloted aircraft. Training in a test program has been taking place for about 1½ years there. Simas said the Air Force prefers the acronym RPA to UAV — unmanned aerial vehicle.