The President of the United States of America, authorized by Act of Congress, July 8, 1918 (amended by act of July 25, 1963), takes pride in presenting the Silver Star (Posthumously) to Sergeant Otis Beverley Sink (ASN: RA-13578725), United States Army, for conspicuous gallantry and intrepidity in action. Sergeant Sink distinguished himself by exceptionally valorous action on 27 February 1967, while serving as a team leader with Troop B, 1st Squadron, 9th Cavalry Regiment, 1st Cavalry Division, during an engagement with a hostile force in the Republic of Vietnam. When Sergeant Sink’s squad became engaged in a fire fight in a rock complex with an enemy force of unknown size and sustained several casualties including the squad leader, Sergeant Sink immediately took command of the unit. Displaying extraordinary courage and resourcefulness, Sergeant Sink crawled and climbed through the rock complex in an attempt to locate the enemy position. Repeatedly exposing himself to hostile fire while checking the area, he soon located the position. Pulling back his squad, he then directed his men in throwing hand grenades at the enemy’s location. Fully aware that he might be taken under fire, Sergeant Sink then climbed back up to the position to determine the results of the grenade bombardment. Finding one of the North Vietnamese dead, Sergeant Sink was climbing down a rock to check for more of the enemy when he was struck and mortally wounded by hostile fire. By his courageous action and complete disregard for his own safety, Sergeant Sink was instrumental in the elimination of the North Vietnamese Army force, and in preventing any casualties among his own men. Sergeant Sink’s display of personal bravery and devotion to duty was in keeping with the highest traditions of the military service, and reflects great credit upon himself, his unit, and the United States Army.