1961 B-52 Crash in North Carolina Nearly Caused Nuclear Catastrophe
On January 24, 1961, a U.S. Air Force B-52 Stratofortress carrying two hydrogen bombs crashed near Goldsboro, North Carolina, after experiencing a fuel leak and structural failure during a routine airborne alert mission. The aircraft disintegrated in mid-air, and both Mk 39 Mod 2 hydrogen bombs separated from the plane. One bomb landed with its parachute deployed and its Arm/Safe switch still in the 'Safe' position. The second bomb, however, impacted the ground at high speed without its parachute, burying itself in a tobacco field. Investigations later revealed that three of the four safety devices on this second bomb had activated, and a single additional activation would have completed the arming and firing sequence, leading to a nuclear detonation. The incident, known as a 'broken arrow,' highlighted the extreme risks associated with the Cold War strategy of keeping nuclear-armed bombers in constant flight. 
