Signing up could earn you gear and it helps to keep offensive content off of our site.
Visit our Flying shop
One of Boeing's chief engineers says a manned version of the X-37B space plane could be in the works.
The X-37B test vehicle waits in an encapsulation cell in Titusville, Florida during April 2010.
(Photos courtesy of USAF and NASA)
Copyright © 2013 FLYING. All rights reserved. Reproduction in whole or in part without permission is prohibited.