Remembering 9/11, 25 years later

The world remembers the thousands of people killed during the 9/11 terrorist attacks, 25 years after the tragedy changed everything. A look at the commemorations across Canada and the U.S., including in the town of Gander, N.L. -- a community that welcomed thousands of stranded travelers with open arms. And remembering the hero who died saving countless lives during the attack at the World Trade Center in New York.

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