Duane Edgar "Doc" Graveline (March 2, 1931 – September 5, 2016) was an American physician and NASA astronaut. He was one of the six scientists selected in 1965, in NASA's fourth group of astronauts, for the Apollo program. He was best known for being immersed in water for seven days as part of his zero gravity deconditioning research while working as a United States Air Force (USAF) research scientist. Personal life Graveline was born on March 2, 1931, in Newport, Vermont. His hobbies included medical consulting in microgravity deconditioning and galactic cosmic radiation and personal health maintenance. Graveline died at the age of 85 on September 5, 2016. Graveline's ashes were interred at Arlington National Cemetery on May 3, 2017, with full military honors. Education Graveline graduated from Newport High School in 1948. He received his Bachelor of Science degree from the University of Vermont in 1951 and his Doctor of Medicine degree from the University of Vermont College of Medicine in 1955. Following his internship at Walter Reed, he specialized in aerospace medicine, receiving his Masters in Public Health degree from Johns Hopkins University in 1958. Career Graveline entered the United States Air Force Medical Service after graduation from medical college. Following internship he attended the primary course in Aviation Medicine, Class 56C, at Randolph Air Force Base and was assigned to Kelly Air Force Base as Chief of the Aviation Medicine Service. Graveline was granted the aeronautical rating of flight surgeon in February 1957. From September 1957 to June 1958, he attended Johns Hopkins School of Hygiene and Public Health, where he received his master's degree in Public Health. He then attended the Aerospace Medical residency at the Air Force School of Aerospace Medicine, completing his residency training in July 1960 at Brooks Air Force Base and receiving his specialty certification by the American Board in Preventative Medicine. At that time he was assigned to the Aerospace Medical Research Laboratory as research scientist with special interest in prolonged weightlessness deconditioning and countermeasures. In July 1962, he returned to Brooks Air Force Base where he continued his research, served as intelligence analyst for Soviet bioastronautics and was active as a NASA flight controller for the Mercury and Gemini missions. Graveline authored ten professional publications and reports on biological deconditioning and weightlessness countermeasures. His research involved bed rest and water immersion to study deconditioning. While in the USAF he did