Secretary of Defense Louis Johnson (left) swears in General Omar Bradley (right) as the first Chairman of the Joint Chiefs of Staff. Among those present are left to right, background: Dan A. Dimball (partially obscured), Under Secretary of the Navy; W. Stuart Symington, Secretary of the Air Force; Gen. Lawton Collins, Vice Chief of Staff; General Hoyt Vandenberg, Chief of Staff; Mrs. Bradley; Gordon Gray, Secretary of the Army; Stephen Early, Deputy Secretary of Defense.