[quote=@Gareth]
I love the idea.  

Maybe each player can be marked after the guy on t.v. talks to them.  So like, just as they get knocked out by the gas, the players can have a mark placed on the side of their face or on their hand.  
[/quote]

I was thinking a mark on the face but I didn't want something that would be permanent. Plus, it would be noticed by a lot of people other than the players. A mark on the hand might not be noticeable enough.