"Chris Prince" wrote in message ...
[Snip]

Thanks for your thoughts, Frank! (I'm not quite understanding the "EDS
with composite tank" part of this though.)

Chris,

Frank is referring to the Mountain High oxygen system. They have created a light weight Kevlar O2 tanks.
http://www.mhoxygen.com/

Wayne
HP14 "6F"
http://www.soaridaho.com/