Diver one of sixteen to die using high-tech gear

[DRE]

Rebreather technology is older than OC, and certain types of rebreathers ared well worth the investment if, and only if, the dive cannot be done on OC. These are the SCR's though. CCR's have been around since WWII as O2 rebreathers for Secret Ops, and work extremely well for what they're designed for. The problem is that when that design is being used for mixed gas diving it just begs for problems - I mean, I only trust my O2 analyzer's readout when I have mixed my own gas, but to think that that same O2 analyzer is going to mix my gas on the fly at 300ft in Lake Superior is just scary.
Don't also forget that Navy divers are very well trained to work as a unit and constantly check up on each other, something YBOD divers don't even have the very first clue as to how to do that (at least the ones that are found floating beneath the surface).