 Scientists in the Warfighter Fatigue Countermeasures Branch (WFC, now AFRL/RHPF) and operators used FAST to identify and avoid fatigue in more than 2,000 hours of B-2 Spirit bomber operations from Whiteman AFB and night operations at Shaw AFB, to optimize shift work schedules for security forces at Brooks AFB, to assess the impact of sleep loss and night operations in accident investigation, and many other consults.During the period 2000–2007, Dr. Miller used FAST to assist USAF mishap investigation boards in at least nine investigations of aviation mishaps.Additionally, FAST was used to prepare guidance for various operational units in the United States and Canada.