Jewitt is a member of the Marine Corps Reserve assigned as OIC, Intelligence Department IMA Detachment, HQ USMC. He received his bachelor's degree from York College, Pa., and a Master of Strategic Studies from the Air War College. He was mobilized for Operation Iraqi Freedom, where he served as team chief, Ministry of Interior, Iraq Security Assistance Mission.
In civilian life, he is the chief of facilities management, NASA Goddard Space Flight Center, Greenbelt, Md. He serves on the Maryland Veterans Commission and Maryland Military Installations Council as well as the executive board of the Maryland Council of Chapters. He resides in National Harbor, Md.