The Boeing KC-135 Stratotanker is a military aerial refueling aircraft developed by Boeing in the 1950s. It is designed to extend the range and endurance of military aircraft by transferring fuel in-flight. The KC-135 can refuel various types of aircraft, including fighters and bombers, using a boom system or hose-and-drogue method. The KC-135 has played a crucial role in numerous military operations, supporting the United States Air Force and allied forces. With its distinctive fuselage and high-mounted wings, the aircraft has been a reliable asset for over six decades, undergoing several upgrades to enhance its capabilities and performance.