Paramedic Medical Rescue EMS/EMTEmergency Medical Service Star of Life Challenge Coin Challenge Coins Made famous by the military, these coins are meant to be always carried by the members of an organization or group. They are used for members to present random challenges to one another. Here is an example scenario: A member, let's call him Dan, is hanging out with a few of the guys smoking cigars. Dan decides to challenge the others for a cigar. He does this by declaring it, pulling out his challenge coin and placing it on the table. The other members must then also produce their challenge coins. If any of the members do not have their coin, those lacking will have to buy Dan a cigar. However, if everyone else can produce their coin, the challenger, Dan, must buy the other members a cigar. Although not typically used by an entire lodge, many subsidiary clubs or groups use them independently.