WASHINGTON - Families, friends and the nation honored the fallen at Fort Hood, Texas, Tuesday, in an emotional memorial service.
The service included prayer, Bible readings and a 21 gun salute. Some of the wounded soldiers attended, but most of the attention was on those who were killed by one of their own.
Thirteen helmets and combat boots stood under the American flag at half mast - a symbol of what the brave men and women pledged to fight for.
How does this crime affect Muslims currently serving in the U.S. military? Click play to hear an answer from CBN News Terrorism Analyst Erick Stakelbeck.
One by one, Fort Hood's wounded survivors filed past the portraits of their fallen comrades, joining thousands of others who came to honor the lives of those who died.
U.S. Army chief of staff Gen. George Casey read scripture from the book of Isaiah.
"Then I heard the voice of the Lord saying, 'Whom shall I send?" He read. "'Who will go for us?' Then I said, 'Here am I. Send me.'"
Words of comfort also came from the Commander in Chief.
"It may be hard to comprehend the twisted logic that led to this tragedy," President Obama said. "But this much we do know - no faith justifies these murderous and craven acts; no just and loving God looks upon them with favor. And for what he has done, we know that the killer will be met with justice - in this world, and the next."
Investigators are trying to piece together a better picture of Army Maj. Nidal Malik Hasan, the man accused of last week's attack.
While there is still no clear motive, officials say Hasan had exchanged emails with a Muslim cleric known as a top recruiter for al Qaeda.
"It is something that should've raised major red flags throughout the intelligence community and throughout the law enforcement community," said Rep. Peter Hoekstra, R-Mich.
In an Internet posting, the cleric said "Hasan did the right thing," and called him a "hero" and a "man of conscience who could not bear living the contradiction of being a Muslim and serving in an Army that is fighting against his own people."
Terrorism investigators reportedly had been conducting an assessment on Hasan for nearly a year and informed the Army. It is not clear what, if anything, the Army did in response.
For now, Fort Hood's commander said his top priority is the safety of the installation and to make sure nothing like this happens again.
"Hasan was a soldier," said. Lt. Gen. Robert Cone, Fort Hood commander. "We have to look across our entire formation not just in a medical community but rally look hard to right and left it's a responsibility of everybody from top to bottom to make sure we are taking care of our own."
Tuesday's service was an attempt to show the country is fulfilling that promise in life and death.