During the 1970s Chanute provided training for thousands of USAF airmen for service in Vietnam. The base invested heavily in quality-of-life programs, building new student dormitories and other support facilities. Due to the cessation of aircraft support requirements for Chanute's training mission, the Air Force closed the base's remaining active runway in 1971. In 1977, Chanute became the prime training center for the Air-Launched Cruise Missile (ALCM). The base was also involved in the Ground-Launched Cruise Missile (GLCM) and MX missile programs.