My son has almost drowned twice, and both times, it was my fault. He had been frolicking in the shallow end for 45 minutes in both cases. Then I got distracted for a minute, and when I glanced back, he was gone. There were multiple people in the pool with him each time, some within a couple of feet, a few of them relatives—and nobody saw that he had drifted back to where the water deepened and had sunk below the surface. The only reason I noticed was because when I looked for him, he wasn’t there.