On 8 December 1964, a B-58 carrying five nuclear weapons, including a 9-megaton thermonuclear bomb, slid off an icy runway and caught fire during a training mission. While taxiing it was caught in the jet blast from the aircraft in front of it while turning onto the runway and applying power of its own. This caused the bomber to lose control and slide off the left hand side of the taxiway. The left main landing gear passed over a flush mounted taxiway light fixture, further the landing gear grazed the left edge of a concrete light base. After traveling another 10 ft the left main landing gear struck an electrical manhole box which caused it to collapse, rupturing a fuel tank. The aircraft then caught fire.