Labatt Brewery siren sounds during emergency exercise Thursday

An emergency exercise is conducted in the area of the Labatt Brewery in London, Ont. on Thursday, June 17, 2021. (Bryan Bicknell / CTV News) An emergency exercise is conducted in the area of the Labatt Brewery in London, Ont. on Thursday, June 17, 2021. (Bryan Bicknell / CTV News)

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