Even as more troops participate in cold-weather training, injuries associated with the cold are on the way down.
Japan invaded Attu in June 1942 and held the Attuans captive in Japan. The invasion prompted the only World War II battle on North American soil.
The MH-60 Jayhawk crashed during a rescue mission on Nov. 13.
A Coast Guard spokesperson says all four crew members were taken to Seattle for treatment following the crash.
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