United States Marine Corps infantry battalions are task organized into Battalion Landing Teams (BLTs) as the ground combat element (GCE) of a Marine Expeditionary Unit (MEU). A standard U.S. Marine infantry battalion is typically supported by an artillery battery and a platoon each of tanks, amphibious assault vehicles, light armored reconnaissance vehicles, reconnaissance Marines, and combat engineers. The battalion structure is designed to readily expand to include a fourth rifle company, if required, as described above under battalion organization. Often Air Naval Gunfire Liaison Company (ANGLICO) officers are assigned to the battalion, to coordinate naval gunfire support.