Dr. Resi Gerritsen, a psychologist and jurist, is an international judge for the International Rescue Dog Organisation (IRO) and the Fédération Cynologique Internationale (FCI). Along with her late husband, Ruud Haak, and other colleagues in Austria, Resi developed a new method for training search-and-rescue dogs that revolutionized the field after producing stellar results in disaster zones around the world. She still trains her dogs for search and rescue, detection work, and Schutzhund.