You need to upgrade your Flash Player to properly use this content.
If you think you may have reached this message in error, you can bypass the detection.
Photo Gallery: Fort Hood shootings
E-mail this GalleryMilitary officials are piecing together what may have pushed an Army psychiatrist to turn on his comrades in a shooting rampage that killed 13 people and wounded 30 in Texas.The suspected shooter is Maj. Nidal Malik Hasan.