Первый американский беспилотный космический корабль многоразового использования Boeing X-37B, известный также как Orbital Test Vehicle (OTV).
The first X-37B Orbital Test Vehicle is an unmanned re-entry spacecraft. It can be seen here waiting in the encapsulation cell of the Evolved Expendable Launch Vehicle at the Astrotech facility in Titusville, Florida, on April 5, 2010. The X-37B has changed orbits and could potentially be used to spy on satellites. The X-37B is currently on its sixth mission that started in May 2020