Dr. Mary Cameron Ritchie : Information around gun control and the mentally ill is scarce . A lone gunman killed three people and then himself at Fort Hood on Wednesday . Latest Fort Hood shooting revives broader gun debate . Mental illness can cover an entire spectrum , from mild to severe . Military screens recruits and returning soldiers for severe mental illness , she says .
Dr. Mary Cameron Ritchie : Information around gun control and the mentally ill is scarce . A lone gunman killed three people and then himself at Fort Hood on Wednesday . Mental illness can cover an entire spectrum , from mild to severe . Military screens recruits and returning soldiers for severe mental illness , she says .