the army psychiatrist is charged with killing 13, wounding more than 30 others in a massacre at ft. hood, texas, in 2009. if convicted he could be the first active duty serviceman executed in more than 50 years. harrowing details in the pennsylvania municipal shooting rampage. investigators say the suspect pictured here opened fire through the front door of a meeting room, then walked to a side door and did the same thing. after going to his car for another gun, two men tackled him. one said his main motivation was protecting his wife. >> people needed help. i helped. that's it. after the second round of shooting i couldn't take anymore. i got up and ran. i'll be honest with you. my wife was behind me and i didn't want her to be shot. >> newe ll is involved in a