The United States Air Force Academy is an undergraduate college in Colorado Springs, Colorado with the mission of educating and commissioning officers for the United States Air Force. The Academy was established in 1954, entered its first class in 1955, and graduated its first class in 1959. The students are referred to as cadets. Sports media refer to the Academy as "Air Force;" this usage is officially endorsed. Most cadets are admitted through a congressional appointment system. The curriculum is broad-based but has traditionally emphasized science and engineering. Before the Academy's first graduating class in 1959, the United States Naval Academy and United States Military Academy were the primary sources of officers for the Air Force and its predecessors, the Army Air Corps and Army