So it's not the one you're used to.
The U.S. Defense Advanced Research Projects Agency (Darpa) is seeking funding in Fiscal 2011 for ArcLight, a program to flight-test a long-range, high-speed strike weapon based on the Raytheon SM-3 ballistic-missile interceptor.
ArcLight will be based on an SM-3 Block II booster stack and a hypersonic glider, and designed to carry a 100-200 pound payload more than 2,000 nautical miles. The weapon will be compatible with the Mark 41 vertical launch system and capable of launch from U.S. Navy warships and submarines as well as Air Force assets. |