From his office on the 14th floor of the New York City Police Department’s headquarters in Lower Manhattan, Michael Gerber, the recently minted deputy commissioner of legal affairs for the department, is able to peer down through the windows of the neighboring U.S Attorney’s Office for the Southern District of New York. 

In his nine years in that office, Gerber worked many cases with the myriad law enforcement agencies that form New York City’s  jurisdictional kaleidoscope. He remembers clearly his first outing with the NYPD, in 2014, while he was still a junior prosecutor. It was Gerber’s first homicide case—two livery drivers had been carjacked and killed in the Bronx, and whoever did it was still at large—he recounted in an interview with the Law Journal.