Obtain a Property Receipt/Discontinuance of Service form from the commanding officer, who must sign the form once it is completed. Known as "Fighting Mac", he participated in the fighting at Third Avenue and Forty-Fourth Street. Served as head of the NYPD detectives division and was responsible for the capture of bank robber Frank Hamby. Christine Varon on LinkedIn: Off-duty NYPD officer fighting for life The New York City Police Department is headed by the Police Commissioner, who is appointed by the Mayor. The Municipal Police were established in 1845, replacing an old night watch system. How to interact with the data: To examine the data, hover the mouse over the figures. // -->,