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UPDATE: McMurdo Station Med-Evac - Antarctica

Some additional information, not much, just that they are going to try to get in there "before Friday" and that there is only a little twilight around noon at this time of year at the station's location.

Temperatures recently were -9F (-23C) which is not impossible to operate in though weather can change dramatically with a change in wind direction.
Posted by: crosspatch 2012-08-09
http://www.rantburg.com/poparticle.php?ID=349860