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Speaker of the House John Boehner (R-OH) speaks at an event on Veterans Affairs at the U.S. Capitol April 3, 2014 in Washington, DC. Boehner and other Republican leaders, discussed the recent shooting at Fort Hood and urged legislation that would bring more accountability to the Department of Veterans Affairs. (Photo by Win McNamee/Getty Images) ( 482301999 )

A soldier watches over media as they prepare to hear General Mark Milley, III Corps and Fort Hood Commanding General, speak during a press conference about a shooting that occurred earlier in the day at Fort Hood Military Base on April 2, 2014 in Fort Hood, Texas. Milley confirmed that four people were dead in the shooting, including the gunman himself. (Photo by Drew Anthony Smith/Getty Images) ( 482113291 )

General Mark Milley, III Corps and Fort Hood Commanding General, speaks to media during a press conference about a shooting that occurred earlier in the day at Fort Hood Military Base on April 2, 2014 in Fort Hood, Texas. Milley confirmed that four people were dead in the shooting, including the gunman himself. (Photo by Drew Anthony Smith/Getty Images) ( 482113457 )

Army Secretary John M. McHugh speaks privately to members of the Senate Armed Services Committee, on Capitol Hill in Washington, Thursday, April 3, 2014, prior to testifying before the committee about the deadly shooting rampage by a soldier yesterday at Fort Hood in Texas. An Iraq War veteran being treated for mental illness was the gunman who opened fire at Fort Hood, killing three people and wounding 16 others before committing suicide, in an attack on the same Texas military base where more than a dozen people were slain in 2009. (AP Photo/J. Scott Applewhite) ( Fort Hood )

Military personnel wait for a news conference to begin at Fort Hood, Texas, on Wednesday, April 2, 2014. A gunman opened fire in an attack that left four people killed including the shooter, at the same post where more than a dozen people were killed in a 2009 mass shooting, law enforcement officials said. The gunman died of a self-inflicted gunshot wound, officials said. At least 14 people were hurt in the shooting. (AP Photo/Austin American-Statesman, Deborah Cannon) ( Fort Hood )

A medical evacuation helicopter makes an approach to Fort Hood, Texas, Wednesday, April 2, 2014, as a Texas Department of Public Safety Helicopter, left, flies behind. One person was killed and 14 injured in a shooting at the military base, and officials said the shooter is believed to be dead. The details about the number of people hurt came from two U.S. officials who spoke on condition of anonymity because they were not authorized to discuss the information by name. (AP Photo/The Temple Daily Telegram, Rusty Schramm) ( Fort Hood )

President Barack Obama pauses as he speaks about the shooting at Fort Hood, Wednesday, April 2, 2014, in Chicago. (AP Photo/Carolyn Kaster) ( Obama Fort Hood Shooter )

Vehicles are checked outside of the Bernie Beck Gate, Wednesday, April 2, 2014, in Fort Hood, Texas. At least one person was killed and 14 injured in a shooting at Fort Hood, and officials at the base said the shooter is believed to be dead. (AP Photo/American-Statesman, Deborah Cannon) ( Fort Hood )

Staff Sgt. John Robertson, right, waits in a parking lot outside of the Fort Hood military base for updates about the shooting that occurred inside on Wednesday, April 2, 2014, in Fort Hood, Texas. (AP Photo/Tamir Kalifa) ( Fort Hood )

A Military Police officer runs toward the road leading to the Main Gate, Wednesday, April 2, 2014, as an active shooter remains at large at Fort Hood, Texas. One person was killed and 14 injured in the shooting, and officials at the base said the shooter is believed to be dead. The details about the number of people hurt came from two U.S. officials who spoke on condition of anonymity because they were not authorized to discuss the information by name. (AP Photo/The Temple Daily Telegram, Rusty Schramm) ( Fort Hood )

Members of the media wait outside of the Bernie Beck Gate, an entrance to the Fort Hood military base, for updates on a shooting that occurred inside on Wednesday, April 2, 2014 in Fort Hood, Texas. (AP Photo/ Tamir Kalifa) ( Fort Hood )

Emergency personnel caution drivers away from the Bernie Beck Main Gate following reports of a shooting, Wednesday, April 2, 2014 at Fort Hood, Texas. (AP Photo/Killeen Daily Herald, Catrina Rawson) ( Fort Hood )

Krystina Cassidy and Dianna Simpson attempt to make contact with their husbands who are stationed inside Fort Hood, while standing outside of the Bernie Beck Gate, on Wednesday, April 2, 2014, in Fort Hood, Texas. At least one person was killed and 14 injured in a shooting Wednesday at Fort Hood, and officials at the base said the shooter is believed to be dead. (AP Photo/ Tamir Kalifa) ( APTOPIX Fort Hood )

A military police officer stops a car at Fort Hood, Texas, after a shooting on the Army base Wednesday, April 2, 2014. At least one person was killed and at least 14 injured in a shooting Wednesday at Fort Hood. (AP Photo/Austin American-Statesman, Deborah Cannon) ( Fort Hood )

Lucy Hamlin and her husband, Spc. Timothy Hamlin, wait for permission to re-enter the Fort Hood military base, where they live, following a shooting on base on Wednesday, April 2, 2014, in Fort Hood, Texas. One person was killed and 14 injured in the shooting, and officials at the base said the shooter is believed to be dead. The details about the number of people hurt came from two U.S. officials who spoke on condition of anonymity because they were not authorized to discuss the information by name. (AP Photo/ Tamir Kalifa) ( Fort Hood )

Motorists stop at the entrance to the Bernie Main Gate of Fort Hood, Texas, Wednesday, April 2, 2014, after a shooting occurred on the military base. (AP Photo/The Killeen Daily Herald, Catrina Rawson) ( Fort Hood )

U.S. Defense Secretary Chuck Hagel, center, leaves the USS Anchorage at Joint Base Pearl Harbor-Hickam, Wednesday, April 2, 2014, in Honolulu. Hagel, who is in Hawaii for the first U.S.-hosted U.S.-ASEAN Defense Forum, briefly spoke on the shootings at Fort Hood, Texas. Hagel said he needed to get more information before he could comment on the shootings. (AP Photo/Eugene Tanner) ( Hagel )

Security check vehicles as they enter Fort Hood's main gate, Thursday, April 3, 2014, in Fort Hood, Texas. (AP Photo/Eric Gay) ( Fort Hood )

General Mark Milley, III Corps and Fort Hood Commanding General, speaks to media during a press conference about a shooting that occurred earlier in the day at Fort Hood Military Base on April 2, 2014 in Fort Hood, Texas. Milley confirmed that four people were dead in the shooting, including the gunman himself. (Photo by Drew Anthony Smith/Getty Images) ( 482113325 )

Soldiers listen in the wings as Lt. Gen. Mark Milley address the media during a news conference at the main gate to Fort Hood, Wednesday, April 2, 2014, in Fort Hood, Texas. (AP Photo/Eric Gay) ( Fort Hood )

Lt. Gen. Mark Milley, the senior officer on base, speaks with the media outside of an entrance to the Fort Hood military base following a shooting that occurred inside, Wednesday, April 2, 2014, in Fort Hood, Texas. Four people were killed, including the gunman, and 16 were wounded in the attack, authorities said. (AP Photo/Tamir Kalifa) ( APTOPIX Fort Hood )