understand them. you've been raising one troubling question. this guy is not from here. why would he come to a place so small and discrete. investigators are on that. >> the investigators don't fully understand what brought this gunman to this particular church in this location. he lives about 40 miles away in the town of new braunfels. why would he drive all wait here and attack this particular church. >> cnn is learning more about the man who opened fire killing people at this small baptist church. the suspected killer is 26-year-old devyn patrick kelley, who once served in the u.s. air force. he served a year in prison for assaulting his wife and child. he was discharged from the air