List: The most deadly US mass school shootings

The number of mass shootings in schools that included 10 or more victims has mounted since Columbine. Now, Uvalde, Texas is added to that list.

Crisis dogs bring comfort to Buffalo first responders after mass shooting

The Tri-State Canine Response Team traveled hundreds of miles to Buffalo, New York, to offer comfort to those grieving the mass shooting at a Tops supermarket.

Suspected Boulder King Soopers gunman makes 1st court appearance

Ahmad Al Aliwi Alissa, the 21-year-old accused of fatally shooting 10 people in a Colorado grocery store, made his first court appearance on Thursday.