This 37-cent stamp, another from the 2005 "American Advances in Aviation" set, showcases the Boeing B-29 Superfortress, a technological marvel of its time. Introduced late in World War II, the B-29 was a strategic heavy bomber that represented a significant leap in aviation design. Its pressurized crew compartments allowed it to fly at high altitudes above the reach of most enemy fighters and anti-aircraft fire, and its long range made it ideal for the vast distances of the Pacific theater. The Superfortress was a complex and formidable weapon, armed with remote-controlled gun turrets that were aimed through a sophisticated analog computer system. The B-29 is indelibly linked to the final chapter of World War II, as it was the only aircraft capable of delivering the atomic bombs. On August 6, 1945, the B-29 "Enola Gay" dropped the first atomic bomb on Hiroshima, and three days later, the "Bockscar" dropped the second on Nagasaki, leading to Japan's surrender. The stamp captures the sleek, silver form of the Superfortress, a symbol of both technological prowess and the devastating power of aerial warfare.