BY WADNER PIERRE In a heroic act, 15-year-old Knoxville, Tenn., high school football sophomore Zaevion Dobson shielded his three female friends from being killed by gunmen who were randomly shooting at them. None of Dobson’s three female friends were hurt Knoxville Police Chief David Rausch told Associated Press. One Dobson’s, Kiara Rucker told told CBS affiliate WVLT,“If … More Pres. Obama: Zaevion Dobson ‘Was a hero at 15’