How an undercover cop thwarted an assassination attempt on former NYPD Commissioner Ray Kelly
Former NYPD Commissioner Ray Kelly is speaking publicly for the first time about a Rikers Island inmate plot to decapitate himself and bomb police headquarters 16 years ago. But Kelly wasn’t scared, the NYPD’s longest-serving commissioner told The Post in an interview ahead of a new A&E docuseries detailing how authorities foiled the 2007 scheme. …