US Marine Corps Expeditionary Force Arrives Off Iran's Coast | 24 June 2019 | The amphibious assault ship USS Boxer has arrived in the US Fifth Fleet's area of operations, the US Navy announced Monday. The ship and its battle group carry thousands of US Marines as well as strike aircraft and helicopters. The Boxer leads the 11th Marine Expeditionary Unit, which also includes the amphibious transport dock USS John P. Murtha and the amphibious dock landing ship USS Harpers Ferry, US Central Command noted in a Monday statement. The ships are replacing like vessels led by the USS Kearsarge, which had been in the theater since April but has now rotated out.