On fourth down teams usually punt. This is another type of kick. After a team scores they kick an extra point. Teams can try field goals to get three points. These two have similar formations.
Most team use the quarterback and the holder for the kick.
He takes the snap from the center and places the ball on a tee or ground. The kicker then kicks the ball. IF the snap is bad the holder yells FIRE and the two wide receivers and two tight ends can go out for a pass, or the quarterback can run the ball. The offense punt the ball to the defense on fourth down when they do not think they can get a first down. A good punter is an effective weapon and can put the opponents way on the other end to the field.