The Harrier Jet, informally known as Harrier Jump Jet, first saw service with the RAF in 1969. The Harrier Jet is a jet-powered attack aircraft with vertical/short takeoff and landing capabilities (V/STOL). It was put into service by the U.S. Marines Corps in 1971, and known as AV-8B. Nearly impossible to track and destroy this awesome jet. It is truly a remarkable aircraft.