THE AIR FORCE FAILED TO ENTER TEXAS CHURCH SHOOTER'S DOMESTIC VIOLENCE RECORD IN U.S. DATABASE Which could have kept Devin Patrick Kelley, who had been convicted of assaulting his wife and stepchild, from buying a gun and shooting 26 people to death Sunday. Half of the people killed in the attack were children -- including one who was 18 months old. Eight of the victims were from the same family. Stephen Willeford, who shot at and pursued Kelley, said, "I'm no hero." President Donald Trump said that gun control would have left "hundreds more dead" in that church. And here's how churches and other soft targets can train for a shooting.