However, unlike the bombs with which the US Air Force had scorched Japan for roughly a year, this bomb was not filled with the usual incendiaries. Inside, as was customary for the B-29, was a bomb. on Monday, August 6, 1945, a propeller-driven, four-engine Boeing B-29 Superfortress aircraft lifted off from the unassuming island of Tinian, its destination due North.
