Submitted via IRC for SoyCow1937
SpaceX is preparing to launch its 13th Falcon 9 rocket in 2017 to orbit one of the U.S. Air Force's two reusable robotic X-37B spaceplanes.
Source: http://www.spaceflightinsider.com/organizations/space-exploration-technologies/x-37b-set-for-first-launch-atop-spacex-falcon-9/ [spaceflightinsider.com]