DEAR ABBY: My 15-year-old grandson races BMX bicycles. Last year, he had a traumatic brain injury and had to be medevaced to a pediatric hospital. Once he recovered, he went right back to racing.

My 15-year-old grandson races BMX bicycles. Last year, he had a traumatic brain injury and had to be medevaced to a pediatric hospital. Once he recovered, he went right back to racing. Last week ...

DEAR ABBY: My 15-year-old grandson races BMX bicycles. Last year, he had a traumatic brain injury and had to be medevaced to a pediatric hospital. Once he recovered, he went right back to racing.