Principal Senior Technical Fellow & Chief Scientist of Hypersonics, The Boeing Company

Principal Scientist, Spectral Sciences, Incorporated

Distinguished Member of the Technical Staff, Sandia National Laboratories

Director, Analysis Engineering, Northrop Grumman Corporation

Owner/CEO, Metis Materials

Special Scientific Advisor, Office of the Under Secretary of Defense for Research & Engineering

Principal Member of Technical Staff, Lawrence Livermore National Laboratory

Orion Chief Engineer, Lockheed-Martin Space

Head, Air and Missile Defense Sector, Johns Hopkins University Applied Physics Laboratory