How the Navy Yard shooting happened

From the first report of a gunman to the lockdown of area schools, see the timeline of the Navy Yard shooting tragedy. NBC’s Jim Miklaszewski reports. Editor's note: In the days following this report, new information emerged indicating that the animation in it is not an entirely accurate depiction of events.

How the Navy Yard shooting happened Category 4 Hurricane Maria Takes Aim at Puerto Rico, Virgin Islands Trump Meets With World Leaders at U.N. Assembly Tensions Run High at the State Department More Than 140 People Arrested in St. Louis Protests American College Students Recovering From Acid Attack NBC News Special Report: Hazing in America Boston Strong: Jeff Bauman's Incredible Story London Subway Attack: Police Make Second Arrest Trump Returns to New York Ahead of Pivotal UN General Assembly Hurricanes Jose Could Lash East Coast as Hurricane Maria Heads Toward Caribbean St. Louis Protests: Second Night of Protests Turns Violent ‘Narcos’ Location Scout Shot Dead in Mexico Police Officers Injured, Protesters Arrested in St. Louis Protests London Subway Attack: Police Arrest Teen Suspect Nearly a Week After Irma, Florida Keys Residents Begin Returning Home North Korean Leader Vows to Complete Nuclear Weapons Program How Companies Are Using Geofence Technology to Find New Hires ‘Vietnam War’ Filmmakers Speak to Tom Brokaw The California Girl Who Can’t Go Out in the Sun Named Homecoming Queen London Terror Attack: Massive Manhunt Underway British PM May Criticizes Trump Over London Subway Attack North Korea's Latest Missile Launch Strains Diplomatic Options 'Not Guilty' Verdict in St. Louis Police Shooting Sparks Protests An Inside Look at Irma's Wrath on St. John Trump Demands Apology from ESPN After Anchor’s Tweets Police Investigating Student Death at LSU Frat House NASA's Cassini Mission Ends After 13 Years

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