i kind of have, i guess psychological problems, if you will. and i guess the mental stress. so. >> twaun stallworth serving a one year sentence for cocaine possession, is still haunted by a combat experience that occurred 20 years earlier during the battle to free kuwait. he says he once saw a friend blown up by a woman and a child who were concealing explosives. moments later, he saw another child running towards him. >> i didn't know what to do. but i turned, i aimed and i fired. he was 6 years old. i didn't kill him. i did injure him -- his leg. that's one of the things that bothers me because that was somebody's kid.