The agency has already spent billions of dollars on the National Aerospace Plane, the X-33, X-34, X-37, X-38 and the Orbital Space Plane.

FORBES: Magazine Article

Latest example of NASA bloated spending: The agency has already spent billions of dollars on the National Aerospace Plane, the X-33, X-34, X-37, X-38 and the Orbital Space Plane.

FORBES: Magazine Article

This appears to be the mindset of the Air Force regarding its experimental X-37B space plane, the billion-dollar robotic vehicle's orbital flight being extended beyond the 270 days it was initially designed for.

ENGADGET: Air Force X-37B space plane books additional time on orbital cruise, orders another margarita