Diver one of sixteen to die using high-tech gear

[DRE]

That is the part that is the most troublesome to me too. In the article it said "his buddy" found him on his back - but if it had been truly his buddy, the guy would have noticed something was wrong in the first place before Gotto turned on his back. Then again, the onset of hypoxia or oxtox can happen extremely fast (and with the Buddy there are some design flaws that would not warn the diver in time) - too fast even for a buddy to react. But it seems that every single time someone croakes on the YBOD the "real buddy" seems to be a mile away. This definitely goes against any sound diving procedures (look at the very first page of the PADI manual, or thereabouts) but is totally accepted by so many so-called technical divers.