A mother is mourning the death of her 18-year-old son, who was fatally shot Friday in Alexandria, Virginia, after police say he and three other teens tried to carjack a man at a gas station and the man opened fire. Jordan Poteat was a student at Suitland High School in Maryland, his mother, Kelly Poteat Stubblefield, said Wednesday as she grappled with the loss. “He wasn’t thinking, and it led to him losing his life,” she said. Poteat, 18-year-old Mikell Morris and two 15-year-old boys tried to carjack a man at an Exxon station in the 2300 block of Richmond...