
Take the words “stratosphere” and “tanker” and you get this plane called the KC-135. Its main job is to fill up other big planes that do important missions. It started working during the Vietnam War and then helped out in Operation Desert Storm many years later. This plane can go really, really fast, as fast as 580 miles per hour.
So, it can fly a long way and quickly help other planes that are almost out of fuel. Think of it like a flying gas station in the sky, making sure other planes can keep going and complete their missions. The KC-135 is like the hero who refuels the other planes so they can save the day.