It was originally given the victor number 12 but on August 1 was given the circle R tail markings of the 6th Bomb Group as a security measure and had its victor changed to 82 to avoid misidentification with actual 6th BG aircraft. Thirteen days later it left Wendover for Guam, where it received a bomb bay modification, and flew to Tinian on July 6. The airplane was accepted by the USAAF on May 18, 1945, and assigned to Crew B-9 (Captain Robert Lewis, aircraft commander), who flew the plane from Omaha to the 509th's base at Wendover Army Air Field, Utah, on June 14, 1945. Martin Company at its Omaha, Nebraska, plant and personally selected by Tibbets on while still on the assembly line as the B-29 he would use to fly the atomic bomb mission. A Boeing design, Enola Gay was built by the Glenn L. The plane was one of 15 B-29s with the 'Silverplate' modifications necessary to deliver nuclear bombs. Enola Gay was assigned to the USAAF's 393rd Bomb Squadron, 509th Composite Group. Tibbets, Jr., commander of the 509th Composite Group, waves from the Enola Gay (B-29-45-MO Superfortress, serial number 44-86292, victor number 82) at 0245 Hours on Augprior to takeoff.