In the post-World War II period prior to the Korean War, the Air Force wanted funding to focus on the massive Convair B-36 bomber for the Strategic Air Command (SAC). In the restrictive defense funding environment following World War II demobilization, this focus on the B-36 would be at the expense of aircraft carriers and Naval Aviation, as well as the Marine Corps and its amphibious assault role which Truman, Johnson and Matthews all saw as obsolete. Top Navy and Marine Corps leaders publicly expressed their dissatisfaction with the Defense Department's plans and policies in this regard, and several senior admirals, including the Navy's top admiral, ADM Louis E. Denfeld, the Chief of Naval Operations (CNO), were forced by Matthews to resign and retire, or did so in protest.