The KC-46 Pegasus refuels the legacy C-17 Globemaster III over the Atlantic Ocean to showcase the present and future of the Air Force, Jan. 15, 2021. Joint Base Charleston hosted and executed a ceremonial flight of the C-17 to celebrate the airframe’s four-millionth flying hour. The event was a celebration of the accomplishment and a thank you to Airmen, industry partners and community leaders who made this possible.