I want to commen just to make sure it's incredibly clear to never take your eyes off your kids around a pool. My youngest child nearly drowned in 2 feet of water with a ton of adults around. I never take my eyes off my kids around water now. It's too easy for something terrible to happen.
I was paddling with my 3 year old daughter by the shore while my 9 year old was playing with his cousin futher up the beach (and in front of the lifeguard station).
My father-in-law (late 60's) wanted to join the two 9 year olds who had swam a short distance to a sandbar, and were in knee depth water.
The old man got into difficulty, I dropped my daughter back with the family and asked my wife to have a look at her old man.
She said he was fine, he's been swimming here for years.
I recognised the pattern of short quick breaths and short quick movements. Each small wave was sapping energy from him.
I ran to help and reached him quickly. People nearby had recognised the danger but were too afraid of stepping out of their depth to help a stranger. Ultimately, nobody on the crowded beach was prepared to take any risk to themselves to help (which I can understand).
On arrival, I realised I did not know what to do. I held him above the water for a few seconds, which meant submerging myself for the same duration. He was now a dead-weight, who had lost all control. I repeated this twice more, until I felt there was a risk to my own safety.
I swam/dragged/paddled/crawled with one arm the short (12 meters) to shore. I was close to becoming exhausted myself.
Later that night over a bbq, the family asked why he simply did not turn around. The time between tiring, and panicking/exhausting he said was too short, and he was so close to reaching the sandbar.
My wife did not believe he had been in danger until that chat over the bbq.
He is alive today because one member of the family recognise the signs of drowning. Being inclose proximity to the lifeguard station which was manned, had no bearing on the outcome.