Name the aircraft

Explanation

The Boeing KC-135 Stratotanker is a military aerial refueling aircraft. The KC-135 was the US Air Force's first jet-powered refueling tanker and replaced the KC-97 Stratofreighter. The KC-135 was initially tasked with refueling strategic bombers, but was used extensively in the Vietnam War and later conflicts such as Operation Desert Storm to extend the range and endurance of US tactical fighters and bombers. The KC-135 entered service with the United States Air Force (USAF) in 1957. The KC-135 is to be replaced by the Boeing KC-46 Pegasus.