Commercial Orbital Transportation Services
In early 2008 PlanetSpace proposed the Athena III launch vehicle, a 2.8-million-pound-thrust ISS resupply rocket, to NASA under the rebid of the Commercial Orbital Transportation Services (COTS) program. The Space Shuttle Solid Rocket Booster (SRB) derived rocket was to feature 2 1/2 segments from the SRB, and was to be realized in a joint venture with Lockheed Martin and Alliant Techsystems (ATK).