Duane D. Thiessen (born March 11, 1951, in Goessel, Kansas) is a retired lieutenant general in the United States Marine Corps, and is the past commander of the United States Marine Corps Forces Pacific, serving from September 2, 2010, until his retirement on August 7, 2012. Lt. General Thiessen is currently serving as president and CEO of the National Naval Aviation Museum Foundation located on Naval Air Station Pensacola. Biography Thiessen was commissioned a second lieutenant in May 1974, after graduating from Pittsburg State University. Following completion of flight training, he reported to Marine Corps Air Station Cherry Point, North Carolina, for transition training to the AV-8B Harrier II. Thiessen's initial assignment as a Harrier pilot was with VMA-542, where he performed in both Operational and Maintenance billets while completing two deployments to Okinawa and participating in a Mediterranean deployment aboard the . In July 1982, Captain Thiessen reported to Marine Aviation Weapons and Tactics Squadron 1 in Yuma, Arizona, where he served as an AV-8 tactics instructor. In December 1985, Major Thiessen returned to Cherry Point and was assigned to VMA-231 as the Operations Officer, where he led a detachment of six AV-8Bs that deployed to the Mediterranean Sea as part of the 22nd Marine Expeditionary Unit. Upon returning to the United States in 1988, Major Thiessen attended the Naval Command and Staff College in Newport, Rhode Island. Following graduation he reported to Naval Air Systems Command, Washington, D.C., and served as an assistant to the AV-8B program manager. In June 1991, Lieutenant Colonel Thiessen assumed command of VMAT-203 at Cherry Point. After relinquishing command, he returned to Washington, DC, to attend the National War College. He was subsequently assigned as the Marine Requirements Officer in the Joint Strike Fighter Program office. Colonel Thiessen then served until June 1999 as the Commanding Officer of Marine Aircraft Group 13 in Yuma. Following command of MAG-13, Colonel Thiessen served in the Aviation Plans and Policy Branch of Headquarters Marine Corps until July 2000, when he was appointed to the position of Deputy Assistant Secretary of the Navy for Expeditionary Force Programs. Colonel Thiessen was promoted to brigadier general and assumed the duties as the deputy director of operations, National Military Command Center in October 2001. He then served until May 2004 as the Deputy Naval Inspector General for Marine Corps Matters/Inspector General of the Marine Corps. Thiessen was then assigned as