The 961st Airborne Air Control Squadron is part of the 18th Wing at Kadena Air Base, Japan. It operates the E-3 Sentry aircraft conducting airborne command and control missions. Mission Provide airborne command and control, long-range surveillance, detection and identification information for commanders in support of U.S. goals. History World War II Organization and crew training The first predecessor of the squadron was initially activated at Fort Douglas, Utah in January 1941 as the 61st Bombardment Squadron, one of the three original bombardment squadrons of the 39th Bombardment Group. The squadron flew Boeing B-17 Flying Fortresses. While stationed at Fort Douglas, the squadron conducted flight operations from Salt Lake City Municipal Airport. In July 1941, the squadron moved with the 39th Group to Geiger Field, Washington. Following the Attack on Pearl Harbor, the squadron flew antisubmarine patrols off the Pacific Coast until February 1942, when it moved to Davis-Monthan Field, Arizona. At Davis-Monthan, it converted to Consolidated B-24 Liberators. With its Liberators, the squadron became an Operational Training Unit (OTU). The OTU program involved the use of an oversized parent unit to provide cadres to "satellite groups" It then assumed responsibility for their training and oversaw their expansion with graduates of Army Air Forces Training Command schools to become effective combat units. The OTU program was patterned after the unit training system of the Royal Air Force. Phase I training concentrated on individual training in crewmember specialties. Phase II training emphasized the coordination for the crew to act as a team. The final phase concentrated on operation as a unit. By late 1943 most of the Army Air Forces (AAF)'s units had been activated and almost three quarters of them had deployed overseas. With the exception of special programs, like forming Boeing B-29 Superfortress units, training “fillers” for existing units became more important than unit training. The squadron mission changed to that of a Replacement Training Unit (RTU). The RTU was also an oversized unit, but its mission was to train individual pilots or aircrews. However, the AAF was finding that standard military units like the 61st, whose manning was based on relatively inflexible tables of organization were proving not well adapted to the training mission, even more so to the replacement mission. Accordingly, the Army Air Forces adopted a more functional system in which each base was organized into a separate numbered unit. Most of the OTUs and RTUs