. >> reporter: rita nakashima brock is co-director of the soul repair center at brite divinity school in fort worth, texas. she says moral injury is different than ptsd, which has clearer symptoms like flashbacks, nightmares and panic attacks. >> you may have them both at the same time, which often happens in extreme terrorizing conditions, but the moral injury piece is more reflective, and it requires you to be able to tell a story and think about it. and it's not simple. >> reporter: she says moral injury can be different for each veteran and can result from a broad range of experiences such as second-guessing actions taken in battle, killing civilians or failing to prevent it, handling human remains, or witnessing the death of a friend and feeling survivors' guilt. many vets are reluctant to share their stories, even years later. >> it's just emotionally sometimes it's difficult. to open up is difficult, to talk is difficult, to relate, and those are the big things that a lot of times, you know, hold us back, even from seeking services. >> i've had plenty of clergy friends say they