The triangle cone shaped X-plane will travel incredibly at Mach 20 (20,900 km/h), making it capable of flying any place on earth in less than an hour!.
The Hypersonic plane has been developed in response to the advancing abilities in stealth and counter-stealth warfare countries like China and other nations have, who could threaten the military dominance of the USA.
DARPA, The US Governments Defence Advanced Research Projects Agency has focused all research on developing this craft so that they can create a bomber able to reach any target on the globe in under an hour. However, there are still many technological hurdles to cross in development as a craft flying at Mach 20 would experience temperatures in excess of 1920C, which is hot enough to melt steel.
You can then start to understand why back engineering a recovered UFO makes perfect sense - and why knowledge of this is kept top secret due to the significant technological advantages it provides to the military. Many in the UFO community believe material such as the metal recovered from the downed Roswell craft displayed properties of being extremely light but at the same time very strong and highly resistent to heat. Was this no co-incidence?
Video the Hypersonic X-plane:
Uncannily similar to a triangle UFO? The cone shaped X-plane currently in development:
The Roswell Memory Foil metal:
In this video Dr Roger Leir talks about the sample of the Roswell memory metal which apparently had properties of super strength and ability to resist all temperatures:
An important note:
The National Security Act was passed just 5 months after the Roswell crash in July 1947, this was the point when the Government knew that the UFO phenomenon was definitely the result of extraterrestrial inter-planetary craft.