Mr. Lehman worked at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, USA for 40 years until his retirement in 2021. His career highlights include Technical Manager for the development for the Mars Pathfinder Attitude and Information Management Subsystem, Project Manager for the Deep Space One mission, Project Manager for the Lunar Explorer Gravity Recovery and Interior Laboratory (GRAIL) mission and Project Manager for the Mars Odyssey mission.