RM-81 Agena, a rocket upper stage family developed by Lockheed, especially the Agena target vehicle used in preparation for the Apollo program lunar missions
Over Ascension Island, a second burn would place the Agena into a low circular orbit.
Agena has also played the role of Mearing's Aide, Mearing being played by Frances McDormand, in Transformers: Dark of the Moon.
The core element was Lockheed's Agena spacecraft, the world's first multipurpose spacecraft with boost and maneuvering engines, also acting as the 2nd stage of the launch vehicle and/or carrier vehicle for the reconnaissance system.