If you're a Navy diver, or know your blood gases, we could use you, in this thread:
http://www.enworld.org/showthread.php?t=137318&page=2
You can read the whole thing, or jump to post 55 on page 2...
http://www.enworld.org/showthread.php?t=137318&page=2
You can read the whole thing, or jump to post 55 on page 2...