petrol bombs. . a high school football coach and security guard is being hail add hi hailed a hero when he convinced a distraught student to give up his shotgun and then embraced him. paolo sandoval has the story. reporter: angel grenado diaz walked into his high school campus armed with a shod gun tg a single shell. that s campus coach and security guard keenan lowe. he grabs the gun with one hand and reaches for the crisis stricken 19-year-old with the other. what follows was a consoling hug and a conversation allowing police to respond and take control. coach lowe has kept a relatively low profile for the last five months only discussing that