> DS>   Isn't the shortest path from much of the US to Belgium gotten by
> DS>   heading north?
 
> Not for much of, only from Hawaii and north-western Alaska. Even from
> Seattle the great circle runs over the southern tip of Greenland, I just
> checked it the classic way: with a piece of string on a globe... :)
 
While that is true I've seen other tracks being used by aircraft.
 
 \%/{at}rd 

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