In May 2013, the Boeing/United Launch Alliance team completed the first wind tunnel test for connected scale models of the Crew Space Transportation-100 (CST-100) capsule, launch vehicle adaptor and Atlas V rocket, as well as a thrust test of the Centaur rocket stage. The wind tunnel test, at NASA’s Ames Research Center in California, allowed for evaluation of the proposed launch configuration. The CST-100 will be able to transport up to seven people, or a mix of people and cargo, to low Earth orbit destinations such as the International Space Station and Bigelow Aerospace’s planned space station. The wind tunnel tests were followed by testing of how the Centaur rocket stage would create thrust by moving liquid oxygen from the oxygen tank to the two Centaur engines, where the oxygen will be mixed with liquid hydrogen. The Centaur stage will propel the spacecraft to its intended orbit after the first stage of the Atlas V lifts the entire rocket stack into space.