The first day in the sentencing phase of the Fort Hood shooting court martial consisted primarily of very emotional testimony.
Last week, Maj. Nidal Hasan was convicted on all 45 counts, including 13 counts of premeditated murder, which stemmed from the 2009 massacre.
On Monday, the prosecution called 12 witnesses who traveled from across the nation. The group, comprised of victims and their family members, talked about how their lives were changed by the shooting rampage at Fort Hood.
A majority of the government's witnesses were family members of the soldiers who were killed in the attack. Many of the widows testified that they have struggled financially and emotionally since November 2009. The families said they still haven't recovered from their loss, and in some cases it has torn the families apart.
Some of the widows and high school-aged children are battling severe depression and some confessed to suicidal thoughts.
Outside of the courtroom, legal experts explained how heart-breaking testimony can help the prosecution case.
"They are demonstrating with evidence, not speculation, the immense human cost of the defendant's criminal misconduct, and that's their burden," Geoffrey Corn, a law professor, said.
Victims who survived the shootings spoke on how their wounds quickly ended their promising military careers. Many are currently suffering from paralyzed limbs, and can't find work once they are medically retired.
Hasan remained quiet and chose not to ask any questions of Monday’s witnesses.
The prosecution will call more witnesses as sentencing continues Tuesday morning.