First aid began when Hood shooting ended

FORT HOOD, Texas, Nov. 7 (UPI) -- The two police officers who ended the shooting rampage at Fort Hood, Texas, said they began first aid on Maj. Nidal Malik Hasan as soon as they shot him.

Sgt. Mark Todd told CNN the shift from gunfight to medical aid began immediately after he and his partner, Kimberly Munley, traded shots with Hasan outside the building where he had opened fire on a crowd of troops.

"It was like instantaneous," said Todd. "We started life-saving measures to keep him alive as well."

Hasan, a U.S. Army psychiatrist, was wounded and arrested after he allegedly pulled two handguns and began firing inside a building Thursday. By the time it was over, 13 people were dead and 38, including Hasan, were wounded.

Spec. Francisco de la Serna was also on the scene and applied a tourniquet to Munley, who had been wounded in the leg during the shootout. He then turned his attention to Hasan, who remained hospitalized Saturday.

"I couldn't get him to answer," de la Serna said when he asked Hasan where he had been hit. "He looked really calm, really pale."