MILAN (AP) — Three of hockey’s international powerhouses are in the semifinals at the Milan Cortina Olympics after getting a scare at the start of the knockout round. The United States , Canada and Finland all won in overtime in the quarterfinals to move one victory away from playing for the gold medal. They may turn out to be better for it. “You have that experience now as a group that you can come through some adversity, and I think it’s good,” Finland’s Sebastian Aho said. “I think it’s