My wife, Tita, was at the kitchen window — making coffee, rinsing dishes, staring into the middle distance, something. Both boys were in the backyard. At first, she couldn’t make sense of what she was seeing, she says, when she tells the story now, years later. This was springtime, just after we’d started cutting the grass again for the season. Our older son, Tomás, then 5, almost 6, was riding his bike back there in wide circles.