GreyhoundsAreFast
Contributor
Dual tanks, dual regulators. Gas management such that if a reg dies or you otherwise lose access to a tank you always have access to enough gas to swim out. Under normal conditions you should never have less than (at absolute minimum) 1/3 of your starting gas at the conclusion of the dive.
Except there's no way of knowing from Scubaboardland whether the divers in this particular photo were working in restricted areas. For all we know they might have been placing pump hoses at the bottom of a 5ft pool in a cavern with 10ft ceiling, or they might have been performing stationary work in shallow pools.
There are literally hundreds of divers on site and only 13+5 are part of the main effort. The rest are part of the equally important but not ask risky support effort.
It's disappointing to see so many critical folks and armchair quarterbacks, especially given the fact that they've pulled nine out so far.
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