In 1980, Duke Field was also one of the fields used in training for Operation Credible Sport, an initiative to prepare for a second rescue attempt of American hostages held in Iran using C-130 aircraft modified with multiple rocket engines for extremely short landings and takeoffs. Most of the testing for this was done at Wagner Field (Eglin AFB Auxiliary Field #1) and it was there during a 29 October 1980 demonstration of one of the highly modified YMC-130H Credible Sport aircraft that a malfunction and hard landing resulted in the destruction of this particular aircraft. All crew aboard the aircraft survived.