This is a very sad story. My thoughts and prayers go out to the family.
A bit of trivia about secondary drowning though. If any of you have ever seen the movie "The Abyss" you might know about the US Navy's Liquid breathing apparatus. This was real technology that worked in experiments but had to be abandoned because subjects experienced secondary drowning as a result of the oxygenated solution washing the surfacant out of the lungs.
Jon Caisson Bozeman
S/V Little Miss Magic, Pirates Cove, AL