Here's a piece about the X-37 in one of America's lo-brow sources of hi-tech info, Popular Mechanics magazine:
Behind the Air Force's and NASA's X-37B Space Plane - Popularmechanics.com
It's very good that the Air Force is doing this. NASA's ability to develop new launch missiles and human-sized spacecraft is degenerate, decadent, almost dead. Not that the USAF is planning to launch people.