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US Military's Hypersonic Jet Could Fly 5 Times the Speed of Sound
http://www.livescience.com/51388-hypersonic-jet-could-fly-mach-5.html
DAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAM!!!!!!!!the Falcon HTV-2 does Mach 20
That's a UAV though right?
Tony2x r u a ufo researcher?