Manage a police precinct
In most U.S. police departments, the rank of Captain is immediately above lieutenant. A Police Captain is often the officer in charge of a precinct. In the New York City Police Department, the rank of Captain is below deputy inspector.
In large police departments a Police Captain may command only one section of a precinct which is commanded by either a Chief of Police, Police Inspector, or the next highest rank. In addition, a Police Captain is considered upper-level management in most large urban police departments.