a team's timeout. If the challenge is successful, the timeout is restored. Inside of two minutes of each half, and during all overtime periods, all reviews will be initiated by a Replay Assistant. The Replay Assistant has an unlimited number of reviews, regardless of how many timeouts each team has left. And no timeout will be charged for any review by the Replay Assistant. All replay reviews will be conducted by the referee on a field-level monitor. A decision will be reversed only when there is indisputable visual evidence to overturn the call. The referee has 90 seconds to review the play. The officials will be notified of a replay request or challenge via a specialized electronic pager with a vibrating alert. Each head coach would also have a red flag to use as a backup to get the attention of the officials to challenge a play. The replay system will only cover the following situations: Scoring plays Pass complete/incomplete/intercepted Runner/receiver out of bounds Recovery of a loose ball in or out of bounds Touching of a forward pass, either by an ineligible receiver or a defensive player Quarterback pass or fumble Illegal forward pass Forward or backward pass Runner ruled not down by contact Forward progress in regard to a first down Touching of a kick Too many men on the field The league also added the following then-minor rule change that became significant in the playoffs a few years later: When a Team A player is holding the ball to pass it forward, any intentional forward movement of his hand starts a forward pass, even if the player loses possession of the ball as he is attempting to tuck it back toward his body. Also, if the player has tucked the ball into his body and then loses possession, it is a fumble. This new interpretation of a forward pass would later be commonly known as the “Tuck Rule”, and was repealed in 2013. 1999 deaths Pro Football Hall of Fame Walter Payton: Having retired as the NFL's All-Time Leading Rusher, Payton died on November 1, 1999 from a rare liver disease known as primary sclerosing cholangitis. Regular season Scheduling formula Highlights of the 1999 season included: Thanksgiving: Two games were played on Thursday, November 25, featuring Chicago at Detroit and Miami at Dallas, with Detroit and Dallas winning. Tiebreakers Miami was the third AFC Wild Card ahead