Question: How many hours did Ronald Nels Running fly in an aircraft removed from combat due to high loss rates?
Related documents: [0]  [DOC] Ronald Nels Running (born 1941) is a retired United States Air Force Major General who has more than 3,800 flying hours in F-105D, F-5 A/E, F-4 D/E and F-16A aircraft. This number of flying hours is significantly higher than the level of 3,000 flying hours that the Air Force requires to award its highest ranking of Command Pilot. [END] 
[1]  [DOC] The Republic F-105 Thunderchief was a supersonic fighter-bomber used by the United States Air Force. The Mach 2 capable F-105 conducted the majority of strike bombing missions during the early years of the Vietnam War; it was the only U.S. aircraft to have been removed from combat due to high loss rates. Originally designed as a single-seat, nuclear-attack aircraft, a two-seat Wild Weasel version was later developed for the specialized Suppression of Enemy Air Defenses (SEAD) role against surface-to-air missile sites. The F-105 was commonly known as the "Thud" by its crews. [END] 
Answer: 
3,800 flying hours
3,800 flying hours