Mason Schermerhorn, 14, Christina Irimie, 53, and Richard Aspinwall, 39, were also killed, when 14-year-old alleged gunman Colt Gray fired off several rounds from an AR-platform-style weapon, according to the Georgia Bureau of Investigation.
The Boy Scouts Middle Tennessee Council said the camper was part of a National Guard family and was participating in the Tennessee National Guard's annual Youth Development Week.
With extensive backgrounds in school threat training, Tanner Good and Brandon King have 2,000 hours in law enforcement training combined.
The alleged gunman, 14-year-old Colt Gray, is accused of using an "AR-platform style weapon" during his rampage at the Georgia high school.
