A 15-year-old high school football player was hailed a hero after he was fatally shot as he covered three girls when a man “randomly†opened fire on a crowd in Tennessee, police said Friday.“Zaevion Dobson, a 15-year-old Fulton High School student and football player, was struck and killed after he had jumped on top of three girls to shield them from the shooters,†Knoxville police Chief David Rausch said, appearing emotional as he held back tears during a news conference.None of the three girls were injured, according to a GoFundMe page for Dobson, that said he was “our hero.â€Thursday’s deadly...