Pass defense is a strategy used in American football to prevent the opposing team from successfully completing forward passes. It involves various techniques and formations designed to disrupt the quarterback's ability to throw the ball and to limit the receivers' chances of catching it. Key components include coverage schemes, where defenders are assigned to specific receivers, and pass rush tactics aimed at pressuring the quarterback. Defensive players, such as cornerbacks and safeties, play crucial roles in pass defense. They must anticipate the quarterback's decisions and react quickly to defend against passes. Effective pass defense can lead to interceptions, deflections, and incomplete passes, ultimately helping the team to gain possession of the ball and control the game.