If all or a portion of a bingo occasion is cancelled due to bad weather such as tornado, blizzard, flood, or power failure, an organization may require players to return the unused portion of their bingo package and may issue them a coupon for a future occasion. Report the occasion up to the point the bingo was discontinued. Deface and keep all unused bingo paper in a secured area for at least 3½ years. It is strongly recommended to use a storage area not susceptible to flooding.