The gunman who killed at least 26 people in a church south of San Antonio was kicked out of the Air Force after cutting a plea deal in which he admitted to fracturing his stepson’s skull, the former head of Air Force prosecutors said Monday. Devin Patrick Kelley faced at least five years in a military prison for attacking the baby and also his wife, the former top Air Force prosecutor, retired Col. Don Christensen, said. An Air Force jury handed him a 12-month sentence in 2012, he said. “He entered pleas of guilty to fracturing his son’s skull, his...