The H-46 Sea Knight tandem rotor helicopter is used by the U.S. Navy and Marine Corps and various countries. It has been serving customers around the world for more than 40 years. Its U.S. Navy missions include vertical replenishment, vertical on-board delivery, search and rescue, medical evacuation, combat support, special warfare and general utility. The Marine Corps mission for the CH-46E includes combat assault, SAR, medevac, and movement of troops, ammunition, supplies and equipment on the battlefield. Other countries flying the Sea Knight include Canada, Sweden, Japan, and Saudi Arabia.