As the problem was being attended to at around 3 a.m. , leaking rocket fuel ignited .
As the problem was being attended to at around 3 a.m. , leaking rocket fuel blew the 8,000 lb ( 3,630 kg ) nuclear warhead out of the silo .
As the problem was being attended to at around 3 a.m. , leaking rocket fuel ignited and blew the 8,000 lb ( 3,630 kg ) nuclear warhead out of the silo .