accidental detonation in a gas line had been responsible, except that the blast had been too powerful, destroying the $100,000 house and badly damaging the two neighboring homes, one belonging to actor dustin hoffman. and as firemen picked their way through the rubble, they found a basement workshop with sticks of dynamite and the materials needed to make bombs. three bodies were found in the rubble. >> the new york cell of the weather underground was beginning to build bombs that were to be placed that night at an officers' dance at ft. dix, new jersey. however, something went badly, and three ended up dead. >> the daughter of the building's owner and another girl fled right after the blast. >> i just went into survival mode, both to get out of the house and then to get away from the police. at that point, i was a combatant. >> the student protesters of the '60s have turned into more serious revolutionaries using far more lethal weapons.