The Air Force has tapped McGhee Tyson Air National Guard Base as its preferred location for the next base to host KC-46 aerial refuelers, replacing the KC-135s that have been there since the 1970s. 
A pair of KC-135s from Fairchild Air Force Base, Wash., continuously operated for 72 hours, landing only to swap crews, refuel, and service engine oil while keeping at least one engine running at all times. The mission, which took place from Oct. 4 to 7 ...