JimC:Next time walk the bottles down, put them in the water, then go back for the rest of your stuff. Get in the water and put them on. Reverse the process when getting out. There was a lady at Little River that walked out with 2? 3? stages on and didn't make it to the top of the stairs. By the time she keeled over her blood was foam. I may have some of that wrong - going from memory.
If understand correctly from what I've been told, the lady you mentioned would have had the same thing happen with no tanks on. But good advice,especially at a place like Little River. About 7 years ago they were doing some doppler testing at Ginnie,and when somebody just walked up those steps with a set of doubles on they could hear the bubbles.