An artist's rendering of the Falcon Hypersonic Technology Vehicle 2. (Defense Advanced Research Projects Agency / April 20, 2012)
Pentagon Releases Results Of 13,000-Mph Test Flight Over Pacific -- L.A. Times
The results are in from last summer’s attempt to test new technology that would provide the Pentagon with a lightning-fast vehicle, capable of delivering a military strike anywhere in the world in less than an hour.
In August the Pentagon's research arm, known as the Defense Advanced Research Projects Agency, or DARPA, carried out a test flight of an experimental aircraft capable of traveling at 20 times the speed of sound.
Read more ....
Update: DARPA releases cause of hypersonic glider anomaly -- AP
My Comment: Now we know why the test failed .... but with no money in the budget for additional tests, it looks like this research is going to be put on hold for now.