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>5. You were cave diving and during deco your teammate was
>experiencing difficulty. You stayed with him as long as your
>gas supply allowed, he was apparently okay so you surfaced
>and while putting your snorkel in your mouth told your surface
>staff to get someone ready to assist him in the water, then
>you put your face in the water and kept up observance of
>your teammate in case his condition worsened and until
>someone could descend to stay by him. Whether you are
>watching for a few seconds, a few minutes or a few hours
>you should have the means to keep an uninterupted watch,
>a snorkel is the perfect tool for this.

Excuse me.  Let's work this scenario.

You were cave diving with your teammate.

You both had the same dive profile.  You both (presumably) used the same
gas(es), because you ANTICIPATED doing the same dive.

You should both have about the same deco obligation.  For him to have
significantly more deco obligation than you do, and you be the one short on
gas, does not make sense to me.

If you aren't both doing deco at the same depth and time, one of you is in
deep kimchee.  If you aborted your deco because you were out-of-gas, and
your buddy didn't have enough reserve to cover your remaining deco
obligation, you are BOTH in deep kimchee; he is damn near out-of-gas, too.

Decompression diving is about planning to have enough gas to finish the
deco, EVEN IN THE PRESENCE OF A MAJOR PROBLEM.

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