| News & Press NASA’s Orion Crew Exploration Vehicle
          Built with INTEGRITY-178B New Generation of Space Exploration Utilizes Green Hills Software   
 SANTA BARBARA, CA—September 8, 2008Green Hills Software, Inc., the technology leader in device software
        optimization (DSO) and real-time operating
        systems (RTOS), today announced that NASA is using Green Hills Software's Platform
        for Avionics, including the safety-certified INTEGRITY®-178B
        real-time operating system, in safety critical electronics – including
        the command computer - aboard NASA’s Orion crew exploration vehicle.
 "The Lockheed Martin Orion team is working to build the state-of-the-art
        crew exploration vehicle which focuses first and foremost on crew safety
        and spacecraft reliability," commented Gary Shubert, Orion Flight
        Software manager for Lockheed Martin. "Lockheed Martin selected
        Green Hills Software’s INTEGRITY® and
        INTEGRITY-178B operating systems for use in the spacecraft’s avionics
        systems, including the Flight Control Module (FCM), Spacecraft C3I Communication
        Adapter (SCCA), and Backup Emergency Controller. Green Hills Software
        was determined to be the most technically mature and offered a more economical
        commercial off-the-shelf solution." "Green Hills Software’s Platform for Avionics is the industry
        choice for the most demanding safety and security critical electronics
        applications – where human life must be protected," commented
        David Kleidermacher, chief technology officer, Green Hills Software. "We
        are pleased that NASA and its contractors have put their trust in Green
        Hills Software to help realize the vision of next-generation human space
        exploration." About the Orion Crew Exploration Vehicle The Orion crew exploration vehicle will transport a new generation of
          explorers to the moon, with crewed flights scheduled to begin in 2015.
          Orion is part of NASA’s Constellation Program, the largest space
          initiative in 30 years, to send human explorers back to the moon and
          then onward to Mars and other destinations in the solar system. The
          new Orion and Ares space transportation system will carry crew and
          cargo to the International Space Station, rendezvous with landing modules
          for exploration of the moon and Mars, and serve as the return vehicle
          back to Earth. Orion will take advantage of the latest 21st century
          technology in electronics, propulsion, life support, and heat protection
          systems.
 About the Green Hills Platform for Avionics The Platform for Avionics includes the INTEGRITY and INTEGRITY-178B RTOSs,
          a complete toolset for safety critical software development, support
          for the aviation industry standard ARINC-653 application software interfaces,
          and the documentation and services required for U.S. FAA DO-178B Level
          A safety certification. The INTEGRITY RTOS’ partitioning features
          allow developers to deploy multiple applications on a single processor,
          at multiple safety certification levels. This powerful capability enables
          developers to reduce the number of on-board computers needed to support
          multiple software systems. Furthermore, the Platform for Avionics with
          INTEGRITY-178B is the only safety critical RTOS certified for multiple
          languages, including Ada, C, and Embedded C++, allowing developers
          to choose the language and kernel best suited to meet their development
          needs. Green Hills Software is the most widely deployed safety critical
          commercial real-time operating system solution, powering avionics systems
          such as the F-35 Joint Strike Fighter and flight controls for the Boeing
          787 Dreamliner.
 About Green Hills Software Founded in 1982, Green Hills Software, Inc. is the technology leader
          in device software optimization (DSO) and real-time operating systems
          (RTOS) for 32- and 64-bit embedded systems. Our royalty-free INTEGRITY® and velOSity™ real-time
          operating systems, µ-velOSity™ microkernel,
          compilers, IPv6-ready networking
          stacks, GateD® Layer 3 routing, MULTI® and AdaMULTI™ integrated
          development environments, DoubleCheck™ integrated
          static analyzer and TimeMachine™ tool
          suite offer a complete development solution that addresses both deeply
          embedded and high-reliability applications. Green Hills Software is
          headquartered in Santa Barbara, CA, with European headquarters in the
          United Kingdom. Visit Green Hills Software on the web at www.ghs.com.
 About NASA The National Aeronautics and Space Administration is a United States
          government agency, responsible for the nation’s space program.
          NASA’s mission is to pioneer the future in space exploration,
          scientific discovery and aeronautics research. www.nasa.gov
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    | North American Sales Contact:Green Hills Software, Inc.
 30 West Sola Street,
 Santa Barbara, CA 93101,
 Tel: 805-965-6044
 Fax: 805-965-6343
 Website: www.ghs.com
 Email: sales@ghs.com
 Media Contacts: Green Hills Software, Inc.
 Barbel French
 Tel: 805-965-6044
 Email: bfrench@ghs.com
 | International Sales Contact:Green Hills Software Ltd
 Fleming Business Centre
 Leigh Road
 Eastleigh
 Hampshire SO50 9PD
 UNITED KINGDOM
 Tel: +44 (0)2380 649660
 Fax: +44 (0)2380 649661
 Email: mktg-europe@ghs.com
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