December 28, 2021 11:12 pm Former NTSB Investigator on Learjet Crash NBC 7’s Mark Mullen spoke with a former NTSB investigator and author of “Air Safety Iinvestigators” about the next steps in determining what happened in the deadly crash. US & World Videos 3:37 SDPD shoots man with baby at Chollas View trolley station 3:01 Woman confronts prowler in her Point Loma home 0:22 Police searching for trio accused of beating man outside downtown Tacos El Gordo 0:34 WATCH: Explosions heard as crews battle SUV fire 1:24 Evacuation orders issued again at energy storage facility