The Sukhoi Su-75 Checkmate is a Russian combat aircraft used by the Air Force. It is a twin-engine, two-seat jet fighter. The Su-75 looks like a big airplane with two big engines on the sides. It has wings, a tail and two big missiles on either side. The Su-75 is used to protect cities and other places from other countries' planes. It can fly fast, and it can use its weapons to shoot down enemy planes. The Su-75 can also carry bombs and other weapons to attack targets on the ground. So the Su-75 is a really important part of the Air Force and helps keep us safe from our enemies.