Victims and family members could not stop from crying as they recalled how they found out about the 2009 Fort Hood shooting.
Many said they immediately began to panic, and with good reason.
The father of Pfc. Francheska Velez took the stand, and had a difficult time looking at a photo of his daughter. Pfc. Velez was pregnant at the time of the shooting.
"Hasan didn't only kill 13 people, he killed 15. My grandson, and myself… slowly," said the father.
Through it all, Hasan remained unmoved. He showed very little remorse for his actions.
"These are civilians that are suffering because of what he did," said retired Army JAG Geoffrey Corn.
Col. Corn told News Channel 25 that Hasan hurt more than just the soldiers he intended to kill. Hasan hurt civilians and their families.
"His personal demeanor during the presentation of this incredibly heart breaking evidence, these are not soldiers testifying in large measure."
But Col. Corn believes this is all part of Hasan's plan to rebel against the legal system.
"He's boycotting this whole process," explained Col. Corn. "He has no respect for the army."
He believes Hasan will speak during sentencing because he will not be under oath and the prosecution will not have the opportunity to cross examine him.