Greg retired in 2020 after 35 years in the Aerospace Industry, working for General Dynamics, Lockheed Martin, and United Launch Alliance.  During  his career, he managed structural and mechanical design and analysis groups, and served as program lead for spearheading the technology to 3D print rocket parts.  He also helped launch spacecraft to most of the planets in our solar system.  He now heads “Arend Consulting & Engineering Services, LLC, and started teaching two Rocket Science classes at Regis High School in fall 2022.