USNS Concord (T-AFS-5) became the first of five United States Navy

United States Navy

The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 Mars class combat stores ship

Mars class combat stores ship

The Mars-class combat stores ships are a class of seven auxiliary vessels of the United States Navy. They are designed for underway replenishment, in support of carrier task force groups, carrying miscellaneous stores and munitions. Initially they carried no fuel oil or liquid cargo, but by the...

s to be transferred to Military Sealift Command

Military Sealift Command

The Military Sealift Command is a United States Navy organization that controls most of the replenishment and military transport ships of the Navy. It first came into existence on 9 July 1949 when the Military Sea Transportation Service became solely responsible for the Department of Defense's...

 on October 15, 1992. USNS Mars

USS Mars (AFS-1)

USS Mars , the third United States Navy ship to bear the name, was laid down by the National Steel and Shipbuilding Company in San Diego, California, on 5 May 1962; launched on 15 June 1963, sponsored by Mrs. Clyde Doyle, widow of Representative Clyde Doyle of California; and commissioned at Long...

 followed on February 1, 1993, USNS San Diego

USS San Diego (AFS-6)

USS San Diego was a Mars-class combat stores ship acquired by the U.S. Navy in 1968. She served the U.S. Atlantic Fleet until decommissioned in 1993...

 on August 11, 1993, USNS San Jose

USS San Jose (AFS-7)

USS San Jose was a Mars-class combat stores ship acquired by the U.S. Navy in 1970. She served as a Navy ship until November 1993, and was involved in the Vietnam War and the Persian Gulf War. The ship was transferred to the Military Sealift Command , and was redesignated USNS San Jose ...

 on November 2, 1993 and USNS Niagara Falls

USS Niagara Falls (AFS-3)

USS Niagara Falls , a , was the only ship of the United States Navy to be named after the City of Niagara Falls, New York. Commissioned into the US Navy on 29 April 1967, she served until September 1994, when she was transferred to the US Military Sealift Command to serve as USNS Niagara Falls ...

on September 23, 1994. San Diego was deactivated on December 10, 1997, and Mars was deactivated on February 12, 1998.

Concord is assigned to the Naval Fleet Auxiliary Force (PM1), MSC Far East.