 The "Mackenzie" is one of a few fireboats to ply the Great Lakes, Edward M. Cotter is operated by Buffalo Fire Department and operates in Lake Erie.The "Mackenzie" does duty during the Canadian International Air Show, using its spray to make a very visible visual point of reference at the center of the display area.In 2004, the vessel completed a million refurbishment that will extend the in-service life of the vessel by approximately 30 years.