The President of the United States of America, authorized by Act of Congress July 9, 1918 (amended by an act of July 25, 1963), takes pleasure in presenting the Silver Star to Captain Robert David Clark, United States Air Force, for gallantry in action while engaged in military operations involving conflict with an armed hostile force as an RF-4C Pilot Systems Operator of the 11th Tactical Air Support Squadron, Udorn Royal Thai Air Force Base, Thailand, in action over North Vietnam on 5 January 1968. On that date, Captain Clark displayed outstanding aerial competence and courageous professionalism in the aggressive pursuance and acquisition of the assigned targets. The tenacity of this officer to attain the objective against formidable defenses is in accord with the highest military standards. By his gallantry and devotion to duty, Captain Clark has reflected great credit upon himself and upheld the highest traditions of the United States Air Force.