Mark van der Feyst has been in the fire service since 1999 and is currently a full-time firefighter in Ontario, Canada. Mark is an international instructor teaching in Canada, the United States and India. He is a local-level suppression instructor for the Pennsylvania State Fire Academy and an instructor for the Justice Institute of British Columbia. He is also the lead author of the book "Residential Fire Rescue." You can contact Mark with feedback at Mark.firstname.lastname@example.org.