The Toronto Police Service Marine Unit works in conjunction with other municipal and regional police units that operate marine units in Lake Ontario, including the Durham Regional Police, Halton Regional Police, Hamilton Police Service, Niagara Regional Police Service, and the Peel Regional Police. The Marine Unit also works in conjunction with the neighbouring York Regional Police, although their marine unit is based in Lake Simcoe. In addition to municipal/regional police services, the Toronto Police Service Marine Unit also works in conjunction with the Canadian Forces Search and Rescue Unit based in CFB Trenton, and the Toronto Search and Rescue volunteer service (which has ties to the Canadian Coast Guard Auxiliary).