Saigon, South Vietnam, July 16, 1969: Adm. John S. McCain Jr., commander in chief of the U.S. Pacific Command, chomps on a cigar as he and Gen. Creighton Abrams, commander of U.S. forces in Vietnam, await the arrival of Gen. Earle Wheeler, chairman of the Joint Chiefs of Staff. Adm. McCain’s father was a World War II hero; his son John III, then a prisoner of war in North Vietnam, served as a U.S. senator.