1. Devin Patrick Kelley was in the U.S. Air Force in 2010 2. He was court-martialed in 2012 for assaulting his spouse and their child 3. Kelley received a bad conduct discharge 4. Kelley is accused of killing 26 people at the First Baptist Church 5. He was found dead in his car from a gunshot wound 6. It's unknown if he shot himself or was shot by his neighbor