The union representing thousands of workers at Canadian Pacific Kansas City says it's served a 72-hour strike notice to the railway. Paul Boucher, President, Teamsters Canada Rail Conference (TCRC) speaks during a press conference to announce the results of strike votes at Canadian National (CN) and Canadian Pacific Kansas City (CPKC) on Parliament Hill in Ottawa, Wednesday, May 1, 2024. THE CANADIAN PRESS/Sean Kilpatrick