POK OF NORTH AMERICA, INC., of Serverna Park, Maryland, named George R. Marwick its representative in Canada. He will be based in Ontario and be responsible for the firefighting equipment manufacturer`s regional sales and marketing program. Steve Tinberg, based in Texas, is responsible for sales and marketing in the southwestern United States. Loren Krumweide, based in California, is responsible for the regional sales and marketing program in the west coast region.