[jyl]

I have not. My wife has, in a crowded airport. 10 women immediately began searching, found him in a few minutes, he'd followed the wrong pair of legs to a couple gates away. Once I was at a popular swimming lake that has a roped off area for kids. Suddenly the life guards ordered everyone out of the water, more life guards came running from the building nearby, they all rushed to one end of the kid zone, joined arms, and began walking through the chest-high water, doing a sweep for a submerged body. Scary. The kid had wandered off and was playing in the grass somewhere.