Tyler J. Doohan knew he didn't have school Monday because of the holiday and asked his mother if it would be OK if he stayed at his grandfather's trailer here.
Tyler knew the place well. He stayed there frequently, playing with other kids in the Rochester, N.Y. suburb and having barbecues and bonfires with his family in the summer.
Firefighters found Tyler's body Monday morning in the back bedroom of that small, single-wide trailer, just a few feet away from the bed of his disabled Uncle Steve. Investigators believe Tyler was trying to save him.