Obamas to attend Fort Hood memorial

President Barack Obama and first lady Michelle Obama will attend Wednesday's memorial service for the victims of last week's shooting rampage at Fort Hood, Texas, a top White House official announced.

Obama vowed after the shootings that "We're going to get to the bottom of exactly what happened" at Fort Hood, where three soldiers were killed and 16 wounded Wednesday afternoon by a soldier who then took his own life. Investigators have identified the killer as Spc. Ivan Lopez, a 34-year-old Iraq war veteran with a history of depression and anxiety.

White House senior adviser Dan Pfeiffer confirmed the trip Sunday morning during an appearance on CBS's "Face the Nation." Obama also addressed the memorial service for an earlier massacre at Fort Hood, in 2009.

      Fort Hood shooting

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      Gunman vented about Sandy Hook shooter, Iraq

      Spc. Ivan Lopez vented about a range of subjects on Facebook before his shooting rampage at Fort Hood in Texas, including his outrage at Adam Lanza's mass school shooting in Connecticut.
    • Sgt. Danny Ferguson, Sgt. Carlos A. Lazaney and Sgt. Timothy Owens were killed during the shooting at Ft. Hood.

      Three soldiers slain identified

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    • CNN has obtained photos of Fort Hood shooting suspect, Ivan Lopez.  Photos provided by Ruth Diaz with Puerto Rico National Guard

      A broader gun debate

      How can the military prevent someone undergoing psychiatric evaluation from bringing a firearm on base?
    • Image #: 28488337    epa04151863 An ambulence makes it's way to Fort Hood military base near Killeen, Texas, USA, 02 April 2014. Four people were reported to have been killed and 14 injured in a shooting at the US Army base and the base remains on lockdown as military police went building to building searching for others involved. The shooter was among the four dead, said US Representative Mike McCaul, chairman of the House Committee on Homeland Security.  EPA/ASHLEY LANDIS /LANDOV

      Female cop is hero

      A soldier has committed a deadly mass shooting at Texas' Fort Hood again. And again, a female police officer was involved in bringing the violent rampage to an end.
    • The main gate at the Fort Hood Army Base is seen on South Fort Hood Street in Killeen, Texas on November 7, 2009.

      No indication of terrorism

      Authorities are downplaying terrorism -- although they haven't ruled it out until the investigation is complete.
    • 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. A soldier opened fire Wednesday on fellow service members at the military base, killing three people and wounding 16 before committing suicide, authorities said. (AP Photo/Eric Gay)

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    • ac spider marks on ft hood_00003216.jpg

      Authorities ID shooter

      Specialist Ivan Lopez has been identified as the man who opened fire in Fort Hood, killing three people then himself.
    • 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.

      Shooter treated for mental issues

      The man who opened fire at the Fort Hood military post was a veteran who served four months in Iraq and was undergoing treatment for mental health issues.
    • ac marks on ft hood_00014917.jpg

      Life inside Fort Hood

      Retired Major General James "Spider" Marks spent years living at Fort Hood. He discussed the impact of Wednesday's shooting.