Early today in 1965, at Wright-Patterson AFB near Dayton, Ohio, a C-124C Globemaster II being refueled for a routine nuclear logistics mission caught fire and was destroyed when a refueling hose was accidentally disconnected. Only the wings and landing gear remained intact. 
Consumed in the fire were numerous nuclear weapons components, including 16 Mark-43 Mod 0/1 conversion kits, an inert Mark-53 training unit, two neutron generators and two tritium reservoirs (one of which ruptured in the fire, contaminating the aircraft and firefighters).
Firefighters retrieved 140 undamaged neutron generators from the C-124C plus three flatbed truck loads of charred tritium reservoirs. Firefighters were initially unaware nuclear components were aboard, and USAF misleadingly said it was carrying only a small amount of conv. ammo.
