The B-52 Stratofortresses are the backbone of the manned strategic bomber force for the United States. Thery are capable of dropping or launching the widest array of weapons in the U.S. inventory. This includes gravity bombs, cluster bombs, precision guided missiles, joint direct attack munitions and nuclear weapons. In a conventional conflict, the B-52 can perform strategic attack, close-air support, air interdiction, offensive counter-air and maritime operations. It is highly effective when used for ocean surveillance, and can assist the U.S. Navy in anti-ship and mine-laying operations.