It's Christmas Eve in Alaska, but the holiday season is in for a rude awakening: A massive ice shelf has collapsed in the Russian Arctic. Intense shockwaves are rocking the region. And military geologist Michael Webster (Brendan Fehr of ''Bones'' and ''Roswell'') and his family's snowy wilderness hike to cut down a Christmas tree leaves them trapped by huge ice geysers, giant avalanches and enormous cracks in the permafrost. But with the help of a hard-nosed Army Colonel (Victor Garber of ''Alia .if your download do not automatically please press button beloww