1961 Goldsboro B-52 crash
The 1961 Goldsboro B-52 crash was an aviation accident that occurred near Goldsboro, North Carolina, United States, on 24 January 1961. A Boeing B-52 Stratofortress carrying two 3.8-megaton Mark 39 nuclear bombs broke up in mid-air, dropping its nuclear payload in the process.
Source: Wikipedia — 1961 Goldsboro B-52 crash (CC BY-SA 4.0)