A retired NASA Astronaut and retired Colonel with the United States Air Force, Mark N. Brown has more than 38 years experience in the aerospace industry. Mr. Brown has enjoyed a distinguished career as an Air Force fighter pilot, engineer, NASA astronaut, NASA manager, and corporate manager. His unique combination of operational, technical, and managerial experience has made him an invaluable asset to the Air Force, NASA, and many aerospace corporations.  After a 20-year career with the Air Force that included two trips to space on the space shuttle, he joined industry and has worked for a series of corporations in ever increasing roles of responsibility. Mr. Brown is now an aerospace consultant.