When the United States military wants to give a name or a number to an airplane, they use a system to do it. For example, a big airplane that flies in the air and carries lots of weapons and people might be called a bomber. The military uses a combination of letters and numbers to name and classify different kinds of airplanes, and they have rules for how they come up with the names and numbers.
The first letter in the name of the airplane usually tells you what kind of airplane it is. For example, the letter "F" usually tells you that it is a fighter plane. The letter "B" usually tells you that it is a bomber. The letter "C" usually tells you that it is a cargo plane.
The next number in the name of the airplane usually tells you how many engines it has. For example, if the plane's name is "F-16," you know that it is a fighter plane with one engine. If the name is "B-52," you know that it is a bomber plane with eight engines.
Sometimes, there are extra letters or numbers in the airplane's name that tell you more information. For example, if the name is "F-22," you know that it is a fighter plane with two engines and it is the 22nd plane in its series. If the name is "KC-135," you know that it is a cargo plane that can also refuel other planes in the air.
Overall, the United States military uses a system of letters and numbers to help people understand what kind of airplanes they have and what they are used for.