Col Greenshields, USAF (ret), currently serves as the Associate Chair for Operations in the Defense Analysis Department. Col (ret) Greenshields earned a B.S. from the US Air Force Academy and a M.A. “With Distinction” from the Naval Postgraduate School. Col (ret) Greenshields is a Master Navigator with over 3,600 hours in HC and MC-130P aircraft having spent the majority of his career in Air Force Special Operations or in Special Duty assignments. He served as Director of Operations at the 67 SOS, RAF Mildenhall, UK; commanded the 550 SOS, Kirtland AFB, NM; was Deputy Group Commander, 16th Operations Group (OG), and later commander, 16th Operations Group (re-designated the 1st Special Operations Group), Hurlburt Field, FL. He also served as the Combined/Joint Special Operations Air Component Commander for both OIF and OEF.