Call ‘em out
At any stage in the game a posse member/s or the whole posse may call out an active (i.e. playing that week) rival posse to meet them in the main street of Aftermath City. In addition various other town characters may call out posse members (see “Poker” on the Trading page for an example) at the GM’s discretion.
To call a posse member or posse out the rival posse need only issue their challenge through the Newspaper/ website (let the GM know one week in advance of game day). The rules for the “High Noon” scenario are then followed with the action taking place on Main Street. Call ‘Em Out situations that result form the actions of posse members during a game are resolved immediately if possible.
If a posse that is challenged refuses to meet the challenge but is still active in game terms that week then they suffer a loss of 2d6 in their infamy rating (this may still be preferable to being gunned down in the street!)