Letterkenny Army Depot (originally Letterkenny Ordnance Depot), the Center of Industrial and Technical Excellence (CITE) for Air Defense and Tactical Missile Systems, was established in 1942. The Depot is under the command structure of the U.S. Army Aviation and Missile Command (AMCOM). The facilities at Letterkenny are used to conduct maintenance, modification, storage, and demilitarization operations on tactical missiles and ammunition.