the league website redirected to American Indoor Football. On August 23, 2015, it was announced that the CIFL would return for the 2016 season (playing an interlocking schedule with another proposed league, Supreme Indoor Football, as part of the Indoor Football Alliance) and the Explosion, Sting, and Blue Racers will return to the CIFL as a result. However, the league effectively disbanded again later that fall after no other teams agreed to join the revived league; the Blue Racers and Sting joined American Indoor Football, and the Explosion eventually announced they would not play in 2016. Official rules and notable rule distinctions Field size – fields were 50 yards long by 25 yards wide, with end zones a minimum of 5 yards in depth. Fields may vary in size due to physical constraints within facility, with CIFL permission. End zones may be rounded due to hockey board configurations. Padded dasher board walls around the entire field acted as an extension of the ground (only "out of bounds" if contact made by opposing player that forces player into the dasher wall, much like a 'down by contact' rule). Goal posts – Goal posts are from the floor to the crossbar. The crossbar is in width. Anything used to hang the goalpost is considered a part of the upright. Number of players – Eight players per team were on the field at one time. Starting in 2013, teams were allowed to expand their active rosters from 19 players to 21, and are required to carry a backup quarterback and kicker. In the league's earliest seasons, the GLIFL/CIFL played with only seven players on each side, one less than the standard eight used in other indoor football leagues. Playing time – Four 15-minute quarters were used, with a running clock. Clocks stopped only for incomplete passes and out-of-bounds plays during the final minute of the second and fourth quarters. A 25-second play clock also was used. Scoring – Six points were awarded for a TD, 2 points for run or pass conversion, or drop-kick PAT, 1 point for place-kick PAT, 2 points for defensive conversion following TD, 2 points for a safety, 3 points for a field goal, and 4 points for a drop-kick field goal. Teams score a single point on their kickoff if the ball makes its way through the uprights. Backfield in motion – One player may be in motion