This undated photo provided by Matthew Westmoreland shows Riley Howell. Authorities say Howell, 21, was killed after he tackled a gunman who opened fire in a classroom at the University of North Carolina-Charlotte. Police said a few students, including Howell, died and several others were injured. Charlotte-Mecklenburg Police Chief Kerr Putney said Howell's actions likely saved the lives of other students. (Matthew Westmoreland via AP)
This undated photo provided by Matthew Westmoreland shows Riley Howell. Authorities say Howell, 21, was killed after he tackled a gunman who opened fire in a classroom at the University of North Carolina-Charlotte. Police said a few students, including Howell, died and several others were injured. Charlotte-Mecklenburg Police Chief Kerr Putney said Howell's actions likely saved the lives of other students. (Matthew Westmoreland via AP)
