Canada says it is not sending any military hardware to the region, but it is working with allies to try to keep Canadians safe.
Members of Canada's official delegation have been discussing with their family members about whether it is safe to attend the Games. Some athletes are also telling relatives to stay away.
The angst is also experienced south of the border. The U.S. has offered to share surveillance technology — an offer that Russia hasn't accepted.
"The security threat to the Olympics, this particular Olympics, is the greatest I have ever seen," said Michael McCaul, chairman of the U.S. House Homeland Security Committee.
Watch Adrienne Arsenault's report on the security concerns at the Sochi Winter Olympics.
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