[dmoiknlasd]

The Meadowlands have huge retractable gates behind each end zone, they used to open the gate of the end zone the visiting team would be kicking to, and then close that gate and open the other when they switched sides of the field. This was never proven to affect kicking but it potentially could have

This practice continued until the league told them they couldn't open or close them during the game, they were either open or closed by kickoff and they had to stay that way the entire game