The Air Force's, specifically the Strategic Air Command's, argument that it could provide relatively inexpensive (from a postwar budgetary perspective) national security via deterrence of a potential adversary, e.g., the Soviet Union, solely with nuclear weapons delivered by heavy bomber aircraft such as the B-36 Peacemaker was particularly persuasive. The notion of any conflict involving the United States below the nuclear threshold had not yet entered strategic thinking or the defense planning lexicon, while the Army and the Air Force basically saw threats to their postwar defense budget share from the Marine Corps and Navy, respectively.