The Columbia, South Carolina, community is reeling in the wake of a shooting allegedly carried out by three teenagers that killed three teens and injured a fourth. Two 17-year-old boys and a 14-year-old boy have been arrested for three counts of murder, attempted murder, possession of a weapon during a violent crime and possession of handgun under the age of 18, Richland County Sheriff Leon Lott said Tuesday. Lott called it a fight "over something stupid" from a couple years ago.