to Spence AAF (Georgia) and, other than some contingents of French and Chinese flight students, aviation training ended at Gunter. By February 1946, Gunter's remaining aircraft were transferred to Maxwell Army Air Base and the field went to "stand by" status. In January 1948 Gunter Field was redesignated Gunter Air Force Base. In May 1950, the Air University located its Extension Course Institute there. In October of that year, a branch of the School of Aviation Medicine was also established. Air Defense Command In 1957 a Semi Automatic Ground Environment (SAGE) Data Center (DC-09) was established at Gunter AFB. The SAGE system was an early generation computer network linking Air Force (and later FAA) United States general surveillance radar stations into a centralized center for continental air defense, intended to provide early warning and response for a Soviet nuclear attack. It was initially under the Montgomery Air Defense Sector (MoADS), established on 8 September 1957. MoADS was synonymous with 32nd NORAD Region, which encompassed an area from the Cuban landmass north to Florida, Georgia, Alabama, Mississippi and Louisiana. MoADS was a blockhouse with 18 inch thick steel-reinforced concrete walls designed to withstand anything but a direct nuclear hit. There were 4 floors, with the bottom floor for inputs, the second floor for computer systems, and the fourth floor for operations. SAGE sites had twin AN/FSQ-7 computers that encompassed an area the size of a football field. These IBM-built systems were tube-based with wire and washer memory banks. IBM also built in excellent diagnostics and redundancy, so the system should always be operational. The memory was 64K, with the incoming radar information storage was on magnetic drums and the maximum response overload before collapse was around 45 seconds. In the 1960s, MoADS also assisted in hosting William Tell, a then-annual competition of Air Defense Command (ADC), later Aerospace Defense Command (ADC), and Royal Canadian Air Force fighter-interceptor squadrons that was held at Tyndall AFB, Florida. In the 1960s, this competition included live shoot-downs of Firebee aerial target drones launched from Tyndall AFB, and obsolescent QB-47E Stratojet bombers and BOMARC missiles launched from nearby Eglin AFB, Florida. On 16 December 1960, the SAGE facility at Gunter controlled two BOMARC-B missiles launched from Eglin AFB and directed their interception of a QB-47E Stratojet drone flying at 500 mph at 30,000 feet. William Tell also showcased various air defense development programs. One was the