On February 5, 1958, a mid-air collision involving a pair of United States Air Force (USAF) aircraft occurs near Tybee Island off the coast of the state of Georgia. One of the aircraft involved was a Boeing B-47 Stratojet bomber conducting a simulated combat mission out of Florida. Onboard the B-47 was a Mark 15 nuclear bomb. Around 2:00 AM, the Stratojet was struck by a North American Aviation F-86 Sabre fighter. Though the collision did not result in any deaths, the Sabre was lost as it crashed shortly after the pilot ejected from the aircraft. More importantly, the crippled Stratojet was forced to jettison its nuclear payload in order to lighten the aircraft and to avoid a potential nuclear detonation during an emergency landing. The bomb was dropped in the Atlantic Ocean near Tybee Island and the B-47 managed to safely land at Hunter Air Force Base in Savannah, Georgia. As for the bomb, recovery efforts were started the following day but proved to be unsuccessful as the bomb itself could not be located at the bottom of the sea. To this day, the nuclear bomb jettisoned by the B-47 that day remains missing.