Interesting article touching on the mysterious black world of the military-industrial complex and focusing on the SR-72.

http://nationalinterest.org/blog/the-buzz/rumors-secret-warplanes-preceded-mach-6-sr-72-spyplane-22556?page=2

The writer is asking all the right questions.

It seems fairly obvious that the SR-71 was replaced long ago with something far more advanced.

The SR-72’s just a smokescreen. There has got to be a reason for them to park the alleged prototype on the tarmac for people to see.