The McDonnell Douglas KC-10 is a military aerial refueling tanker aircraft developed from the McDonnell Douglas DC-10. It is designed to refuel a variety of aircraft in flight, enhancing the operational range and flexibility of military missions. The KC-10 can carry both fuel and cargo, making it a versatile asset for the United States Air Force. Equipped with advanced refueling systems, the KC-10 can transfer fuel to multiple aircraft simultaneously. It features a wide fuselage and a large cargo hold, allowing it to transport troops and supplies as well. The KC-10 has been in service since the 1980s and continues to play a crucial role in military logistics.