The National Football League (NFL) is composed of a variety of positions, including ENDS, LBS, LTS, and RTS. ENDS are wide receivers who line up at the end of the offensive line and are responsible for catching passes from the quarterback. LBS stands for Linebackers, who are defensive players that line up behind the defensive line and are responsible for tackling the ball carrier. LTS stands for Long Snappers, who are responsible for snapping the ball to the punter or placekicker. Finally, RTS stands for Running Backs, who are offensive players that line up behind the quarterback and are responsible for carrying the ball and blocking for the quarterback.