FILE - In this Sept. 11, 1998, file photo, a Swissair member lights a candle during a memorial service in Zurich for the victims of Swissair Flight 111, which crashed into the Atlantic Ocean off Peggy's Cove, Nova Scotia, on Sept. 2 killing 229 people. The plane crash was among Canada's deadliest accidents in the last 150 years, killing 229. Police say 50 people are presumed dead following a July 6, 2013, fiery oil train crash in Lac-Megantic, Quebec, making it Canada’s worst railway crash in nearly 150 years. (AP Photo/Christoph Ruckstuhl, File)