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NFL: Under Review You see it time and time again, football games blown on a bad call. The official makes a small blunder and fans all over the world are throwing popcorn, the remote, and whatever else is in reach at their television monitor. Referees in the NFL are constantly under the spotlight and have to think quick as they watch each play, sometimes without a clear view. This is why the NFL introduced the replay system in the 1999 season. The system begins with the replay booth receiving a live feed from the network television control truck covering the game. A buzzer system is utilized to signal the call for a replay. Before the final two minutes, the head coach can buzz the referee and replay booth that he challenges a play and wants a review. Within the final two minutes, the booth can buzz the referee, calling for a replay. The head coaches wear a belt pack containing a buzzer. When pressed, the buzzer simultaneously signals the referee, umpire and replay booth that a replay is being requested. There are three replay monitors at field level in open-air stadiums. Two monitors are positioned at opposite 20-yard lines near the sideline wall. A third