It’s Great Lakes only? We had the announcement printed out at the read/initial area of my last facility which was southern region. I thought the only stipulations were based on how many times you’ve done the event? Like you have to have done it so many times in the past X amount of years to work in the tower etc.They put out a bid for it. The one for 2021 just closed. It is only open to Great Lakes region Tower rated controllers with a few exceptions.