Under joint development by Boeing Phantom Works and DARPA (the Defense Advanced Research Projects Agency), the Canard Rotor/Wing, or CR/W, is a revolutionary aircraft that combines the speed and range of a fixed-wing aircraft with the flexibility of rotary-wing flight. The CR/W's rotor is designed not only to spin during vertical takeoffs and landings but to stop turning during flight and convert to a fixed wing for high-speed cruise.