The radical design was to be powered by two axial-flow turbojets with an unusual blended wing-body canard design capable of 612 mph (985 km/h) in level flight. The USAAF passed on the 1942 proposal, but the effort speeded the development of the USAAF's first successful operational jet fighter, the P-80 Shooting Star which did see limited service near the end of war. The P-80 was a less radical design with a single British-based Allison J33 engine, with a conventional tail, but it retained a wing which was the same shape as the outer wing sections of the P-38 Lightning.