Army psychiatrist Major Nidal Malik Hasan is in custody in the hospital after allegedly opening fire on the Army base in Fort Hood, Texas. He killed 13 of his fellow soldiers and injured at least 30 others. The reasons behind the attack are still unknown, but the tragedy will undoubtedly have a lasting affect on the families stationed at Fort Hood.

We speak to Olga Peña, managing editor of the Killeen Daily Herald, for local reactions to the shooting. Andrew Pomerantz, associate professor psychiatry at Dartmouth Medical School, who works with soldiers recovering from post-traumatic stress, also joins us, along with Angela Huebner, associate professor in the Department of Human Development's Marriage and Family program at Virginia Tech. The three discuss the psychological effects of stress on military personnel and their families.

Thirteen people are dead and 31 injured after a soldier went on a shooting spree at Fort Hood in Texas. The Army base was locked down for much of the afternoon as authorities tried to determine the series of events that lead the suspected shooter, Army psychiatrist Major Nadal Malik Hasan, to open fire on his colleagues. Hasan was injured after being shot by another soldier.

To help unravel the story, we talk to Olga Peña, managing editor of the Killeen Daily Herald, who has been covering the story. For a soldier's perspective, we speak with Naveed Ali Shah, a public affairs specialist with the U.S. Army who was stationed at Fort Hood from 2008 to 2009, and whose wife and son are still there. Shah is, himself, Muslim; he joined us from Iraq. We also spoke with Andrew Pomerantz, a professor of psychiatry at Dartmouth University, who has worked with veterans with PTSD for 35 years.