Fort Hood victims named

Those killed range in age from 19 to 62. The oldest died doing what he loved:

Michael Cahill, 62, liked his job as a physician's assistant at Fort Hood so much that he only took one week of recovery time after undergoing heart surgery, his sister told CNN affiliate KREM.

Cahill, who served in the Army Reserve, previously worked as a registered nurse, Marilyn Attebery told KREM. He later returned to school to pursue a career as a physician's assistant, she said. Cahill was assisting with physicals for soldiers preparing for deployment at the time of the shooting, his sister said.

"I'm just upset for all the families and for what went on here. They're talking about wars and show wars and it's right there in Fort Hood and it's just devastating to everybody and all the families," Attebery told KREM.

Cahill is survived by his wife, Joleen, three children and a grandson, Attebery said.

One man who helped people killed by another.