High Quality Content by WIKIPEDIA articles! The Port Authority of New York and New Jersey Police Department, or Port Authority Police Department (PAPD), is a law enforcement agency in New York and New Jersey, the duties of which are to protect all facilities owned by the Port Authority of New York and New Jersey, and to enforce state and city laws at all the facilities. The PAPD is one of the largest police departments in the United States, with 1,660 officers and supervisors. The PAPD is owned and operated by the Port Authority of New York and New Jersey, a bi-state agency running the bridges, tunnels, airports, and seaports along the New York - New Jersey border.