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Old 07-30-2009, 02:25 PM   #15
glatt
 
Join Date: Jul 2003
Location: Arlington, VA
Posts: 27,717
Well, in the Navy tank, you are breathing compressed air in the chamber at the bottom, and when you swim up to the top, you have to exhale (scream) the whole time so you don't burst from the expanding air in your lungs.
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