The initial explosion of the pressure-cooker bombs, though great, was not that impressive in itself. It wasn’t meant to be. It was just the primer, the match to the fuel that the two trucks had been pumping into the air of the tunnel for the previous three hours.
The tunnel was dome-shaped, seventy-three feet wide at its base, twenty feet high, and a little less than four miles long. Within milliseconds of the blast, a powerful shock wave raced in both directions along its entire length. There were no people on the subway platforms that late at night, but in both stations, the wave ripped apart vendor shacks on the platforms, MTA tool carts, and wooden benches.
As the wave hit the south end of the 181st Street station, a three-ton section of the vaulted tunnel’s roof tore free and crashed to the tracks—as it would in a mine cave-in—while up on Broadway, the fantastic force of the blast set off countless car alarms as it threw half a dozen manhole covers into the air.
South of the main blasts, in the tunnel between the 157th Street station and 168th Street, the shock wave smashed head-on into the approaching Bronx-bound 1 train that Mr. Beckett had spotted. The front windshield shattered a millisecond before the train tore from its moorings, killing the female train operator instantly.
As the train derailed, its only two passengers, a pair of Manhattan College students coming back from a concert, were knocked spinning out of their seats onto the floor of the front car. Bleeding, and still barely alive, they had a split second to look up from the floor of the train through the front window at a rapidly brightening orange glow. It was strangely beautiful, almost like a sunset.
Then the barreling twenty-foot-high fireball that was behind the shock wave slammed home, and the air was on fire.
Back at the abandoned lot near the Harlem River, Mr. Joyce had to wait seven minutes before he heard the first call come in on the radio scanner he had tuned to the fire department band. He clicked a pen as he lifted his clipboard.
“We did it, Tony,” he said, giving the driver a rare grin.
“Phase one complete.”