An F-15C Eagle piloted by Col. Brian Kamp, Air National Guard advisor to the U.S. Air Force Warfare Center, takes off from the runway September 27, 2017, at Nellis Air Force Base, Nevada. Kamp’s 4,000 flight-hours is equivalent to more than 165 continuous days piloting the F-15C. (U.S. Air Force photo by Susan Garcia/Released)