Marcus' Vacation Pic
From ARG Guide/Trail Wiki
Edit: Considered as a possible puzzle, it turns out it is not. Sometimes a pic is just a pic. Nothing was found to be stegged in it. UF thread is here (http://forums.unfiction.com/forums/viewtopic.php?p=39851#39851).
According to this (http://forums.unfiction.com/forums/viewtopic.php?p=39950#39950) correspondence, Marcus is the guy on the far right.
And according to this (http://forums.unfiction.com/forums/viewtopic.php?p=39982#39982) one, the helmets were randomly handed out. (Thanks to ramiles.)