Officers hailed as heroes after stopping Nashville school shooter

A shooter killed three students and three staff members inside of The Covenant School in Nashville on Monday. Nashville police said the 28-year-old shooter was confronted by two officers, who fatally shot the attacker, effectively stopping the massacre. Retired NYPD sgt. Joseph Giacalone joined LiveNOW from FOX's Josh Breslow to talk about the actions of those officers and take a closer look at the surveillance video released by investigators.