Law enforcement has identified the man shot and killed at Mar-a-Lago as 21-year-old Austin Tucker Martin of Cameron, North Carolina. Authorities say he was armed with a shotgun and a gas can. Former FBI Supervisor and MS NOW National Security Intelligence Analyst @ Rob D'Amico tells Alex Witt that President Trump was not at the location during the incident, which might indicate a smaller security presence and explain how Martin breached the perimeter. This is a developing story. MS NOW: My