The QU-22B was to be an unmanned airborne relay for the Igloo White operation during the Southeast Asia War. Igloo White placed and monitored sensors to detect traffic along the Ho Chi Minh Trail. Due to equipment reliability problems all operational flights carried a pilot and the system worked well but, due to the loss of several aircraft, the QU-22 program was cancelled in 1972 and this aircraft went on display at the National Museum of the USAF in 2002.