The Veteran and Rescue Dog are promotional characters originally given to backers of the Flash Point: Fire Rescue - Extreme Danger Kickstarter campaign, but are now available for purchase. Both characters come with a character card and a unique miniature.
The Veteran is a more experienced firefighter who can avoid being knocked down and help near by firefighters by giving them extra action points.
The Rescue Dog is limited to only a few actions but has more action points to spend.