Justin Trudeau three half-siblings, Kyle and Alicia, from his mother's remarriage to Fried Kemper, and Sarah, from his father's relationship with Deborah Coyne. Trudeau lived at 24 Sussex Drive, Ottawa, the official residence of Canada's prime minister, from his birth until his father's government was defeated in the federal election on May 22, 1979. The Trudeaus were expected to move into the residence of the Leader of the Official Opposition, Stornoway, at 541 Acacia Avenue in Rockcliffe Park, but because of flooding in the basement, prime minister Joe Clark offered them Harrington Lake, the prime minister's official country retreat in Gatineau Park,
Prime Minister of Canada revealing any secrets, I can tell you that I have done all three." Two official residences are provided to the prime minister—24 Sussex Drive in Ottawa and Harrington Lake, a country retreat in Gatineau Park—as well an office in the Office of the Prime Minister and Privy Council (formerly known as Langevin Block), across from Parliament Hill. For transportation, the prime minister is granted an armoured car and shared use of two official aircraft—a CC-150 Polaris for international flights and a Challenger 601 for domestic trips. The Royal Canadian Mounted Police also furnish constant personal security for the prime minister