The President of the United States of America, authorized by Act of Congress July 9, 1918, takes pleasure in presenting the Silver Star to First Lieutenant (Air Corps) Jacob Beser (ASN: 0-855461), United States Army Air Forces, for gallantry in action while engaged in aerial flight against the Japanese Empire on 6 August 1945. Lieutenant Beser was the Radar Countermeasures Officer for a combat crew of the B-29 aircraft of the 393d Bombardment Squadron, 509th Composite Group, TWENTIETH Air Force, which flew from a base in the Mariana Islands to drop on the city of Hiroshima, Japan, the first atomic bomb to be used in warfare. Flying 1500 miles over open water to the coast of Japan, they manned their assigned positions and crossed the island of Shikoku and the Inland Sea. They constantly faced the danger of being hit by anti-aircraft fire, enemy fighters, or suffering mechanical or other failures which would intensify the risks of carrying this powerful missile. Throughout the mission the element of hazard from the unknown prevailed, for this was the first time that this bomb, much more destructive than any other in existence, had been dropped from an airplane. The effect it would have on the airplane and these crew members was only to be estimated. Shortly after 0900 they brought the plane in over the city, and at 0915 the bomb release was pressed. The bomb cleared, and fell toward the planned objective. They then headed from the area and, despite a minor effect from the detonation, returned safely to their home base. By their courage and skillful performance of duty achieved in outstanding fashion despite the dangers involved in accomplishment of this historic mission, these individuals distinguished themselves by extraordinary achievement and reflect great credit on themselves and the Army Air Forces.