"Misty" was the radio callsign used by the F-100F Fast Forward Air Controllers (Fast FACs) during the Vietnam War. There were 155 pilots officially assigned to fly missions over North Vietnam from 15 June 1967 - 19 May 1970. 21 other attached pilots flew occasional missions. There were also Intelligence Officers, Flight Surgeons, and Maintenance Officers assigned. It was a small, tight-knit group of special people given a difficult task.