Lost Nuke....
On 14 February 1950, a Convair B-36B, serial number 44-92075 assigned to the 7th Bomb Wing at Carswell Air Force Base, crashed in northern British Columbia after jettisoning a Mark 4 nuclear bomb. This was the first such nuclear weapon loss in history. The B-36 had been en route from Eielson Air Force Base near Fairbanks, Alaska to Carswell AFB in Fort Worth, Texas, on a mission that included a simulated nuclear attack on San Francisco.