The U.S. Air Force's first operational supersonic operational bomber, the B-58 made its initial flight on Nov. 11, 1956. In addition to the Hustler's delta wing shape, distinctive features included a sophisticated inertial guidance navigation and bombing system, a slender "wasp-waist" fuselage and an extensive use of heat-resistant honeycomb sandwich skin panels in the wings and fuselage. Since the thin fuselage prevented the carrying of bombs internally, a droppable, two-component pod beneath the fuselage contained a nuclear weapon -- along with extra fuel, reconnaissance equipment or other specialised gear. The B-58 crew consisted of a pilot, navigator/bombardier and defence systems operator.