Prosecutors: Chris Kyle, Chad Littlefield shot in the back

American Sniper Chris Kyle's widow was in court again for the second day of his alleged murderer's trial.

Eddie Ray Routh faces capital murder charges for shooting the former Navy SEAL and his friend, Chad Littlefield.

When Taya Kyle took the stand Wednesday, she told jurors that her husband met Routh at a gun range because Routh's mother was worried he was suffering from post-traumatic stress disorder.

On Thursday she watched as prosecutors showed photos of the crime scene, including photos of the weapons found at the gun range where the men were killed.

Kyle was shot five times and Littlefield was shot four times. Most of the gunshots were in their backs.

Both men were carrying handguns, but they were found still holstered in their waistbands with the safety on, according to witness testimony.

Police video played in court showed Routh telling officers investigating the deaths that he had "taken a couple of souls" and had more to take.

The patrol car video shows officers in Lancaster trying to coax Routh from a pickup in the hours after Kyle and Littlefield were found dead. The video also showed him negotiating with police while making comments like, "Anarchy has been killing the world."

Routh eventually sped away from officers, who pursued and rammed the pickup before Routh surrendered.

His attorney claims he was in a severe state of psychosis on the day of the murders.

As the trial moves forward, experts will likely debate the role mental illness and PTSD played in the crime.

If convicted, Routh could be sentenced to life in prison.

The Associated Press contributed to this report.