<Li> Provost Marshal's Office (base law enforcement) and Law Enforcement Battalions (combat support or "field MPs")--United States Marine Corps </Li> <Ul> <Li> Masters - at - Arms or MAs are enlisted Sailors of the U.S. Navy, designated as Naval Security Force (NSF), primarily responsible for law enforcement and force protection . NSF personnel are led by Naval commissioned officers from the Limited Duty Officer (LDO) and Chief Warrant Officer (CWO) communities, who are also designated as NSF . Additionally, a host installation's Security Force (both overseas and in the Continental United States) are augmented by Sailors on Temporary Assignment of Duty (TEMADD) from their parent units, as part of the Auxiliary Security Force (ASF). Shore Patrol personnel are Sailors from U.S. naval vessels visiting foreign ports (and some domestic ports) assigned to the Shore Patrol Party or Beach Guard, responsible for the good order and discipline of Sailors from the visiting ship (s) on liberty . Sailors assigned to the Shore Patrol Party or Beach Guard Detachment do not include Sailors assigned to the ship's Security Force, both performing different duties while visiting that country, because of the Status of Force Agreement (SOFA) and / or Rules of Engagement (ROE). Prior to the 1970s, Master - at - Arms and Shore Patrol were used synonymously to refer to Sailors assigned to perform law enforcement and Shore Patrol duties . </Li> <Li> Air Force Security Forces (formerly known as Military Police, Air Police and Security Police)--United States Air Force </Li> </Ul> <Li> Masters - at - Arms or MAs are enlisted Sailors of the U.S. Navy, designated as Naval Security Force (NSF), primarily responsible for law enforcement and force protection . NSF personnel are led by Naval commissioned officers from the Limited Duty Officer (LDO) and Chief Warrant Officer (CWO) communities, who are also designated as NSF . Additionally, a host installation's Security Force (both overseas and in the Continental United States) are augmented by Sailors on Temporary Assignment of Duty (TEMADD) from their parent units, as part of the Auxiliary Security Force (ASF). Shore Patrol personnel are Sailors from U.S. naval vessels visiting foreign ports (and some domestic ports) assigned to the Shore Patrol Party or Beach Guard, responsible for the good order and discipline of Sailors from the visiting ship (s) on liberty . Sailors assigned to the Shore Patrol Party or Beach Guard Detachment do not include Sailors assigned to the ship's Security Force, both performing different duties while visiting that country, because of the Status of Force Agreement (SOFA) and / or Rules of Engagement (ROE). Prior to the 1970s, Master - at - Arms and Shore Patrol were used synonymously to refer to Sailors assigned to perform law enforcement and Shore Patrol duties . </Li> <Li> Air Force Security Forces (formerly known as Military Police, Air Police and Security Police)--United States Air Force </Li>

What do military police do in the navy