Truman Attending Demonstration at Aberdeen Proving Ground
President Harry S. Truman watching a demonstration of military hardware with other dignitaries, (unidentified) at Aberdeen Proving Ground in Maryland. Front row, left to right: Major General Edward MacMorland, President Truman, and General J. Lawton Collins. Seated in the second row, right, is Secretary of the Army Frank Pace. All others are unidentified.