On September 11, 2001, with the terrorist attack on the twin towers of the World Trade Centre in New York City, the United States entered one of the greatest trials in its history. There were thousands of deaths in the wake of that tragedy -- and thousands of heroes. Led by Police Commissioner Bernard B. Kerik and Fire Commissioner Thomas Von Essen, the New York Police Department (NYPD) and the New York Fire Department (FDNY) banded together in courage...