SAN DIEGO — Three U.S. Marines killed in the weekend crash of an Osprey aircraft in Australia were identified Monday. They were Cpl. Spencer R. Collart, 21, of Arlington, Virginia; Capt. Eleanor V. LeBeau, 29, of Belleville, Illinois; and Maj. Tobin J. Lewis, 37, of Jefferson, Colorado, their unit, Marine Rotational Force-Darwin, said in a statement.…