Masten Space Systems has signed a contract with NASA's new Commercial Reusable Suborbital Research (CRuSR) program. The initial contract is for four flights of test payloads on Xaero, Masten's next-generation vehicle currently in assembly. Masten Space Systems won the NASA-funded Lunar Lander Challenge in October 2009 and demonstrated the first ever vertical takeoff, vertical landing in-air relight in May 2010. The initial four flights for the CRuSR program will be conducted this winter from the company's 200,000-ft² test area at the Mojave Air and Space Port in Mojave, CA. Masten Space Systems expects to begin extensive commercial flight operations in 2011.