Moose if and when you hear a "freeze" yelled out and repeated, you may want to let a nearby ref know at that time that your a first responder. Dan will be all over the place at the event and will have may too much going on to remember. Last year a freeze was called and rumor spread that a guy needed medical help. I was on the other side of the field( its a big field) and was about to sprint to the dmz to see if i could help but they had it under control pretty quickly. Ref's are the best resource to use in that situation cuz they mostly have radios.