The Sikorsky MH-60S multimission helicopter Knighthawk entered service in February 2002. U.S. Navy expected to acquire a total of 237 of the MH-60S helicopters to conduct vertical replenishment missions as search and rescue combat support of the war and special measures in the mine air.
The helicopter was originally designated CH-60S, replacing Boeing U.S. Navy CH-46D Sea Knight helicopters heavy load on the vertical replenishment role. The helicopter was re-designated MH-60S, as a result of expansion in the mission requirements to include a wide range of additional capabilities of combat support. Withdrawal of the U.S. Navy Knights concluded the Sea in September 2004.