3525th USAF Hospital - Physiological Training Unit

The 3525th USAF Hospital - Physiological Training Unit was an integral component of the United States Air Force’s training infrastructure during the mid-20th century. Located at Williams Air Force Base, Arizona, it was primarily responsible for providing medical support and specialized physiological training to pilots and aircrew. The unit focused on preparing personnel for the physical and psychological stresses of high-altitude and high-speed flight, including hypoxia training and altitude chamber instruction. By supporting both operational readiness and pilot safety, the 3525th played a crucial role in the development of advanced jet aviation during the early Cold War era.