developed for Paul Allen's SpaceShipOne, while the orbital version will use the internal motors plus larger external hybrid motors. SpaceDev's hybrid rocket technology was pioneered by the American Rocket Company, or AmRoc. On May 5, 2006, SpaceDev announced it was selected as a finalist in NASA's $500 million Commercial Orbital Transportation Services (COTS) demonstration program. SpaceDev has been working with NASA Ames to design a modern version of the NASA HL-20 Personnel Launch System, called the SpaceDev Dream Chaser. However, on August 18, 2006, it was revealed that SpaceDev did not win the contract. On December 18, 2006, SpaceDev announced that it has been awarded a $330,000 Phase I study contract from Benson Space Company to further the SpaceDev Dream Chaser spaceship program. The study will contribute to the ongoing development of the spaceship and will result in space vehicle and rocket motor designs ready for Phase II vehicle fabrication and testing. The SpaceDev Dream Chaser spaceship is based on NASA's design of the ten passenger orbital HL-20 Personnel Launch System, and will launch vertically and land horizontally in direct sight of viewers. On April 10, 2007, SpaceDev announced that it had finalized a Memorandum of Understanding with United Launch Alliance on exploring the potential of launching the SpaceDev Dream Chaser spaceship using an Atlas V 431, (having a four-meter diameter fairing, three solid rocket boosters, and a single Centaur engine in the second stage). Destinations could include the International Space Station (ISS) and other commercial orbital destinations as well as for commercial orbital space tourism flights. On February 1, 2010, NASA announced a $20 million award to Sierra Nevada, to go toward development of the SpaceDev Dream Chaser, which could be ready for launch by 2014 on United Launch Alliance's Atlas V rocket, according to Mark Sirangelo, corporate vice president for Sierra Nevada's space systems division. On August 3, 2012, NASA announced new agreements with the Sierra Nevada Corporation and two other companies to design and develop the next generation of U.S. human spaceflight capabilities, enabling a launch of astronauts from U.S. soil in the next five years. Advances made by these companies under newly signed Space Act Agreements through the agency's Commercial Crew Integrated Capability (CCiCap) initiative are intended to ultimately lead to the availability of commercial human spaceflight services for government and commercial customers. As part of this agreement, Sierra Nevada Corporation was awarded $212.5 million, ostensibly