Operation Eagle Claw was a failed operation by the United States Armed Forces ordered by U.S. President Jimmy Carter to attempt the rescue of 52 embassy staff held captive at the Embassy of the United States, Tehran on 24 April 1980. The operation, one of Delta Force's first,[1] encountered many obstacles and failures and was subsequently aborted. Eight helicopters were sent to the first staging area called Desert One, but only five arrived in operational condition.[2] One had encountered hydraulic problems, another was caught in a sand storm, and the third showed signs of a cracked rotor blade. During the operational planning, it was decided that the mission would be aborted if fewer than six helicopters remained operational upon arrival at the Desert One site, despite only four being absolutely necessary.[2] In a move that is still discussed in military circles, the field commanders advised President Carter to abort the mission, which he did.[3]