Pentagon Orders Security Review of All US Military Facilities
Secretary of Defense, Chuck Hagel (R), Gen. Martin E. Dempsey, Chairman of the Joint Chiefs of Staff, Adm. Jonathan Greenert, Chief of Naval Operations, Ray Mabus, Secretary of the Navy, and Adm. James A. Winnefeld Jr., Vice Chairman of the Joint Chiefs of Staff, render honors during a wreath laying ceremony at the U.S. Navy Memorial in Washington, D.C., Sept. 17, 2013.
Defense Secretary Chuck Hagel is ordering a security review of all U.S. military facilities around the world after a gunman shot 12 people to death Monday at the Washington Navy Yard.
The Pentagon says details of the review will be announced Wednesday.
The Navy Yard gunman, 34 year-old Aaron Alexis, was fatally shot by police about 30 minutes after he began the shooting rampage. The FBI says he acted alone and got into the Navy Yard with valid identification. His motive is still unknown but police say there is no evidence of connection to terrorism.
Investigators say Alexis had paranoia, a sleep disorder, and claimed he heard voices. His family said he had sought treatment for his mental problems.
Recent US Mass Shootings
Recent US Mass Shootings
September 2013: Gunman kills 12 people at a naval facility in Washington before dying in a gun battle with police
December 2012: Gunman kills 26 adults and children at Sandy Hook Elementary School in Connecticut before killing himself
July 2012: Gunman kills 12 people during showing of Batman movie in Colorado
January 2011: Gunman kills six people and wounds U.S. Representative Gabrielle Giffords in Arizona
November 2009: U.S. Army psychiatrist kills 13 people at Fort Hood, Texas
April 2007: Virginia Tech student kills 32 people before committing suicide
April 1999: Two Columbine High School students kill 12 students, one teacher and themselves in Colorado
Alexis' employer, a contractor called The Experts, said he worked on at least six military installations in July and August without incident.
U.S. senators remembered the victims on Tuesday with a prayer and a moment of silence.
At the Navy Memorial near the Capitol, Hagel, Joint Chiefs Chairman Martin Dempsey, and Washington Mayor Vincent Gray placed a wreath honoring the men and women who were gunned down.
President Barack Obama has ordered all flags across the country to fly at half-staff through sunset Friday to honor the victims.
Alexis opened fire Monday on employees of the Naval Sea Systems Command, using a shotgun and a handgun. Authorities say earlier reports he had an assault-style rifle were incorrect.
Alexis was a resident of Fort Worth, Texas. U.S. media reports say Alexis had been arrested in two previous shooting incidents, in 2004 in Seattle, and in Fort Worth in 2010.
Shooting at Navy Yard in Washington
1/13Defense Secretary Chuck Hagel and Joint Chiefs Chairman Gen. Martin Dempsey present a wreath at the Navy Memorial in Washington to remember the victims of Monday's deadly shooting at the Washington Navy Yard, Sept. 17, 2013.
2/13A Navy Yard employee walks to lay a bouquet of flowers by an anchor outside of the Washington Navy Yard, Sept. 17, 2013.
3/13The American flags surrounding the Washington Monument fly at half-staff as ordered by President Barack Obama, one day after the deadly shooting at the Washington Navy Yard, Sept. 17, 2013.
4/13Emergency vehicles and law enforcement personnel respond to a shooting at an entrance to the Washington Navy Yard, Sept. 16, 2013.
5/13Police respond to the shooting at the Washington Navy Yard, Sept. 16, 2013.
6/13U.S. Capitol Police personnel keep watch on the East Plaza of the Capitol as the investigation continues to the shooting at the nearby Washington Navy Yard, Sept. 16, 2013.
7/13Police who responded to shooting at the Washington Navy Yard leave the facility, Sept. 16, 2013.
8/13A Metropolitan Police Department officer walks near the Washington Navy Yard, Sept. 16, 2013.
9/13A police helicopter is seen as police walk on the roof of a building as they respond to a shooting at the Washington Navy Yard, Sept. 16, 2013.
10/13A helicopter lifts a person off the roof as police respond to the report of a shooting at the Navy Yard in Washington, Sept. 16, 2013.
11/13Police work the scene near the Washington Navy Yard, Sept. 16, 2013.
12/13A police vehicle is seen as police respond to a shooting at the Washington Navy Yard, Sept. 16, 2013.
13/13Police work the scene after a gunman was reported at the Washington Navy Yard in Washington, Sept. 16, 2013.
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