The One Minute Warning or The One Minute Timing Rule is a rule in the Arena Football League that dictates the flow of the game in the final minute of a half.
At the one-minute mark of any given half the referee will announce "One Minute Timing Rule in effect". This means the rules will drastically change.
First, the game clock goes from a continuously running clock (except for scores and time-outs) to a clock that mirrors NCAA rules (stopping on first downs, out of bounds, incompletions, etc.) However, there is no "victory formation" in arena football during the final minute if the offensive team has the lead. The offense must advance the ball at least one yard to keep the clock running; failing to do this, the clock will be stopped as soon as the ball is blown dead and will remain stopped until snapped again.