This was nothing like 1993, Detective Greg Semendinger thought as he and his copilot, Officer James Ciccone, circled the buildings in Aviation 6, one of the smaller police helicopters. He had landed a police helicopter on the north tower after the bombing eight years earlier and had lifted people off the roof who could not make it down the stairs. Today, he could barely see the upper floors of either tower. Semendinger and Ciccone had arrived about 8:54 A.M., eight minutes after the first plane’s impact, scrambling from the Aviation Unit’s base in Brooklyn.
