By Mike McDaniel Buffalo’s assistant athletic trainer Denny Kellington is being lauded for his efforts in saving the safety’s life. As Damar Hamlin’s health continues to improve, there are individuals being identified for their work in the 24-year-old’s resuscitation and life-saving efforts. Bills assistant athletic trainer Denny Kellington is one person being hailed as a hero. Sources told Sports Illustrated‘s Albert Breer that Kellington administered timely CPR that was absolutely vital in saving Hamlin’s life. Hamlin suddenly collapsed in the first quarter of the Monday Night Football match…