November/December '79 we were flying gunships out of Guam to replicate time and distance for our mission to rescue the hostages in Iran. Take off from Guam, fly up to Korea, hang out for awhile, and back. Average flight time 18 hours at 10,000 feet unpressurized, max continuous power, doing about 215 IAS, two ARs. That part of the mission got scrubbed.