This definition appears very frequently
See other definitions of USF
Samples in periodicals archive:
Underground Support Facility; Unhook the Stars Film; Union of Societies of Foresters; Union Sportive Ferryville; Union Station Fitness; Union Station Foundation;
underground support facility. The entire structure is mounted on huge springs to protect it from shockwaves generated by the atomic blasts of incoming missiles.
Its electronics manufacturing facility is in Randburg and the underground support facility is in Chamdor. Becker Mining also has a factory in Welkom...