Watch this video to learn more about the Boeing-built X-37B Orbital Test Vehicle (OTV). Last -known launch was May 17, 2020. Launched by an Atlas V 501, landing date is yet to be determined following completion of its mission. As of September 2017, THERE ARE NO KNOWNOPERATIVE ORBITAL WEAPONS SYSTEMS. For those interested in tracking the Boeing X-37, consult NASA for research information and the U.S. Air Force Space Command. This video shows the autonomous X-37B spaceplane on its last mission launch which has some innovative NASA, U.S. Naval Research Laboratory and U.S. Air Force Academy research equipment onboard this United States Space Force-7 mission. From BOEING, NASA and the U.S. Space Force.