The X-37B Orbital Test Vehicle mission 3 (OTV-3), the Air Force's unmanned, reusable space plane, landed at Vandenberg Air Force Base at 9:24 a.m. Oct. 17 .

"The 30th Space Wing and our mission partners, Air Force Rapid Capabilities Office, Boeing, and our base support contractors, have put countless hours of hard work into preparing for this landing and we were able to see the culmination of that dedication," said Col Keith Balts, 30th Space Wing commander.

"I'm extremely proud of our team for coming together to execute this third safe and successful landing. Everyone from our on console space operators to our airfield managers and civil engineers take pride in this unique mission and exemplify excellence during its execution."

The OTV-3 conducted on-orbit experiments for 674 days during its mission, extending the total number of days spent on-orbit for the OTV program to 1367 days.

"The landing of OTV-3 marks a hallmark event for the program" said the X-37B program manager.

"The mission is our longest to date and we're pleased with the incremental progress we've seen in our testing of the reusable space plane. The dedication and hard work by the entire team has made us extremely proud."

The X-37B is the newest and most advanced re-entry spacecraft. Managed by the Air Force Rapid Capabilities Office, the X-37B program performs risk reduction, experimentation and concept of operations development for reusable space vehicle technologies.

The Air Force is preparing to launch the fourth X-37B mission from Cape Canaveral Air Force Station in 2015.