 (see also Evolved Expendable Launch Vehicle) Another spacecraft evaluated by NASA, and also for commercial crew, is the OmegA rocket, which will look similar to Ares I and will based on Space Shuttle Solid Rocket Booster.The Commercial Orbital Transportation Services (COTS) development program began in 2006 with the purpose of creating commercially operated automated cargo spacecraft to service the ISS.The program is a fixed–price milestone-based development program, meaning that each company that received a funded award had to have a list of milestones with a dollar value attached to them that they would not receive until after achieving the milestone.