A Helicopter Mine Countermeasures Squadron 15 (HM-15) MH-53E Sea Dragon helicopter takes off from the deck of the amphibious transport dock USS DULUTH (LPD-6) to conduct mine-clearing operations while towing a Mark 105 hydrofoil minesweeping sled. HM-15 is using the DULUTH as a base of operations during the joint U.S. -Canadian fleet exercise MARCOT '93