Deep below the tower, Mike Pecoraro was suddenly interrupted in his grinding task by a shake on his shoulder from his co-worker. "Did you see that?" he was asked. Mike told him that he had seen nothing. "You didn't see the lights flicker?", his co-worker asked again. "No," Mike responded, but he knew immediately that if the lights had flickered, it could spell trouble. A power surge or interruption could play havoc with the building's equipment. If all the pumps trip out or pulse meters trip, it could make for a very long day bringing the entire center's equipment back on-line.
Mike told his co-worker to call upstairs to their Assistant Chief Engineer and find out if everything was all right. His co-worker made the call and reported back to Mike that he was told that the Assistant Chief did not know what happened but that the whole building seemed to shake and there was a loud explosion. They had been told to stay where they were and "sit tight" until the Assistant Chief got back to them. By this time, however, the room they were working in began to fill with a white smoke. "We smelled kerosene," Mike recalled, "I was thinking maybe a car fire was upstairs", referring to the parking garage located below grade in the tower but above the deep space where they were working.
The two decided to ascend the stairs to the C level, to a small machine shop where Vito Deleo and David Williams were supposed to be working. When the two arrived at the C level, they found the machine shop gone.
"There was nothing there but rubble, "Mike said. "We're talking about a 50 ton hydraulic press - gone!" The two began yelling for their co-workers, but there was no answer. They saw a perfect line of smoke streaming through the air. "You could stand here," he said, "and two inches over you couldn't breathe. We couldn't see through the smoke so we started screaming." But there was still no answer.
The two made their way to the parking garage, but found that it, too, was gone. "There were no walls, there was rubble on the floor, and you can't see anything" he said.
They decided to ascend two more levels to the building's lobby. As they ascended to the B Level, one floor above, they were astonished to see a steel and concrete fire door that weighed about 300 pounds, wrinkled up "like a piece of aluminum foil" and lying on the floor. "They got us again," Mike told his co-worker, referring to the terrorist attack at the center in 1993. Having been through that bombing, Mike recalled seeing similar things happen to the building's structure. He was convinced a bomb had gone off in the building.