Good info and links! One of these 450 ft. in diameter just flew around Antarctica for 42 days at up to 150,000 ft. http://www.avweb.com/eletter/archives/avflash/344-full.html#189065 <http://www.avweb.com/eletter/archives/avflash/344-full.html#189065> --- StripMime Report -- processed MIME parts --- multipart/alternative text/plain (text body -- kept) text/html ---