Central Intelligence Agency, National Intelligence Survey 14… (1973)
“ Initial pre-military training for those aspiring to become pilot and navigator candidates is available to aviation clubs in many cities throughout the country and conforms to the Aviation Pre-Military Training Program. This program has two states, first gliders and then powered aircraft. Training is available for those 16 to 18 years old and is conducted during the summer vacation months. After pre-military aviation training, officer candidates enter one of the new 4-year officer aviation schools. ”
