Monday night on All In with Chris: Tragedy hit the Washington, D.C., Navy Yard Monday morning when at least one shooter opened fire at the headquarters of the Naval Sea Systems Command. Chaos and confusion followed for several hours, with a brief closure of Reagan National Airport and conflicting reports about whether there were multiple gunmen on the loose. One shooter was killed and later identified as Aaron Alexis, a 34-year-old who recently began working as a civilian contractor. The death toll continued to rise throughout the day, and D.C. Mayor Vincent Gray confirmed at least 13 deaths by late afternoon, including the shooter, with several more people injured. Jim Cavanaugh, NBC/MSNBC Law Enforcement Analyst, retired ATF Special Agent in Charge and Former ATF Hostage Negotiator, Don Andres, an eyewitness to the shooting who resides near the D.C. Naval Yards and works for Senator Stephen Horsford, and Rep. Eleanor Holmes Norton of the District of Columbia will join Chris Hayes to talk about the day's events.
Also Monday, the United Nations released a report confirming last month's chemical weapons attack was in fact armed with sarin gas. The UN did not determine who was to blame for the attack, although it is largely believed the Syrian regime launched the rockets at a rebel stronghold near Damascus. Over the weekend, the U.S. and Russia announced they had come to an agreement on securing and destroying Syria's chemical weapons. Chris Hayes will discuss the latest on the Syrian situation with Rep. Alan Grayson of Florida.
Plus: Chris Hayes will comment on the accidental shooting of two innocent bystanders by New York City police in Midtown Manhattan Saturday night. The officers were trying to apprehend a man behaving erratically who they believed had a weapon, but when they fired three shots in the crowded area they hit two women nearby. Conservatives often argue after a tragic event like today's Navy Yard shooting that more guns would have kept more people alive, but the incident in New York this weekend shows that even trained professionals with guns don't always keep people safe.
Later, Senator Sherrod Brown, Democrat from Ohio, and Heather McGhee, Vice President of Demos, will join Chris Hayes to talk about the surprise announcement this weekend that former Treasury Secretary Larry Summers withdrew his name from consideration for Chairman of the Federal Reserve. Summers is a polarizing figure who was seen as the frontrunner in a highly contested and publicized battle for the position of Fed Chair. Who will fill that spot is still up in the air, but the economy was on President Obama's agenda today, when he spoke on the fifth anniversary of the collapse of Lehman Brothers and the beginning of the financial crisis. The president urged Congress to come to an agreement quickly on the upcoming battles over the budget and debt ceiling.