Hansford Tillman (HT) Johnson (born January 3, 1936) is a retired four-star general in the United States Air Force who served as the Acting United States Secretary of the Navy, overseeing the United States Navy and United States Marine Corps in the administration of President George W. Bush. He is the only retired Air Force officer to ever hold that position. Prior to that he was Assistant Secretary of the Navy (Installation and Environment). He currently works at the Institute for Defense Analyses. Early life and Air Force career Johnson was born on January 3, 1936, in Aiken, South Carolina. He graduated from high school in 1953 and then attended Clemson College. He was the outstanding graduate in thermodynamics and aerodynamics from the United States Air Force Academy in 1959, received a master's degree in aeronautics from Stanford University in 1967 and a master's degree in business from the University of Colorado in 1970. Johnson also graduated from the Air Force Squadron Officer School, Army Command and General Staff College, National War College, and the advanced management program at Dartmouth College. Johnson was the first graduate of the United States Air Force Academy to achieve the rank of general. After graduation from the Air Force Academy, Johnson married Linda Whittle of Augusta, Georgia, and attended flight training at Bartow Air Base, Florida, and then Laredo Air Force Base, Texas, receiving his pilot wings in 1960. His first operational assignment was to the 317th Troop Carrier Wing, Evreux-Fauville Air Base, France, where he flew C-130 Hercules transports throughout Europe, Africa, the Middle East and West Asia. He continued flying with the 317th when it transferred to Lockbourne Air Force Base, Ohio. After completing graduate school at Stanford University, Johnson volunteered for duty in Vietnam. In 1967 he flew with the 20th Tactical Air Support Squadron as a forward air controller, and directed tactical close air support strike missions against enemy supply, storage, vehicle and troop targets. During his tour, he flew 423 combat missions, 71 of which were over North Vietnam or the demilitarized zone. After returning from Vietnam, he served as an assistant professor of aeronautics at the United States Air Force Academy, and then served as commander of the 22d Bombardment Wing at March Air Force Base, California and on the staff of Strategic Air Command (SAC) at Offutt Air Force Base, Nebraska. From 1982 to 1985, Johnson led