An ordained Baptist chaplain and army captain, Roger Benimoff spent two tours of duty in Iraq and months between deployments counseling soldiers in the U.S. During his career, he provided spiritual guidance to American soldiers through crises of faith, bereavement, and trauma until he himself broke down. While training and working as a chaplain at Walter Reed during the height of its crisis, Benimoff was diagnosed with chronic PTSD and spent months of treatment at some of the facilities where he trained as a caretaker. NEWSWEEK's Eve Conant has tracked Benimoff's experiences over the years, starting with his time at Walter Reed, and recently in a book about his experiences, Faith Under Fire. Benimoff retired from the army earlier this year. He spoke with Conant from Dallas, where he is a hospital chaplain, about what might have happened in Fort Hood, how the military families will cope with tragedy on the homefront, and why the army pushed him so far he had to leave.

Is "contact" or "secondary" PTSD a genuine problem?

Oh yes, definitely. I didn't have much time to counsel before I was deployed—I had only three weeks active duty before going over—but I would debrief my soldiers in Iraq all the time about events I was not present at. I remember when Eagle Troop had lost a soldier to a sniper and I did the CISD [Critical Incident Stress Debriefing]. I still have those images in my head. Or when one of Fox Troop's tanks went over a land mine. The soldiers told me about how the IED blew through their tank, how the driver's body was completely destroyed, how it was like spaghetti, and they were desperately trying to pull him out of the driver's seat while their command told them to leave the scene. They didn't leave him behind. But the tension of that, and their descriptions of that moment stay with me. When Eagle Troop lost a sergeant to an RPG, they told me about running into the hospital, seeing Iraq soldiers vomiting on the stairs after what they had just seen—walls covered in blood, brain matter on the floor. These images don't go away and I wasn't even there that day.

It's hard to draw too many conclusions right now, but we do know this: Thursday night, authorities shot and then apprehended the lone suspect, Maj. Nidal Malik Hasan. A psychiatrist who was set to deploy to Iraq at the end of the month, Hasan reportedly opened fire around the Fort Hood Readiness Center, where troops are prepared for deployments to Iraq and Afghanistan. And though this scene is a most extreme and tragic outlier, it comes at a time when the stress of combat has affected so many soldiers individually that it makes it increasingly difficult for the military as a whole to deploy for wars abroad. In an abrupt news conference, Lt. Gen. Robert Cone, the top commander at Fort Hood, said in response to the shooting that authorities would "increase the security presence" on the military base. On the surface, it seemed like a logical enough plan. But it makes one wonder how much any kind of lockdown will either get at the root causes of soldier stresses or better prepare them for more battle.