There's a mention in my technology book about Hypersonic Aircraft so I decided to do a google search and look what I found:
[A href="vny!://en.wikipedia.org/wiki/SR-91_Aurora"]vny!://en.wikipedia.org/wiki/SR-91_Aurora[/A]
[A href="vny!://en.wikipedia.org/wiki/Blackstar_%28spaceplane%29"]vny!://en.wikipedia.org/wiki/Blackstar_%28spaceplane%29[/A]
Creepy stuff. Just makes me wonder what's going on in that Boeing factory by my airport that makes military planes. I know somebody who has 'special clearance' into the no go zone. He's only been in there once for a helicopter that didn't need rotary or something bizarre.