The flight crew of the Enola Gay with ground maintenance officer, Lt. Col. John Porter (standing far left). Left to right, standing: Capt. Theodore J. "Dutch" Van Kirk, navigator; Major Thomas W. Ferebee, bombardier; Col. Paul W. Tibbets, pilot; Capt. Robert A. Lewis, co-pilot; and Lt. Jacob Beser, radar countermeasure officer. Left to right, front row: Sgt. Joseph S. Stiborik, radar operator; Staff Sgt George R. “Bob” Caron, tail gunner; Pfc. Richard H. Nelson, radio operator; Sgt. Robert H. Shumard, assistant engineer; and Staff Sgt. Wyatt E. Duzenbury, flight engineer. The other two individuals that participated in the flight, weaponeer and mission commander, Capt. William S. Parsons of the U.S. Navy, and his assistant, 2nd Lt. Morris R. Jeppson, are not pictured.