 So like I said, his social media profile didn't contain threatening language, nor have they found any history of mental health issues. So he seemed to have a clean bill of health when it comes to that. Again, which is very odd because the man who shot President Ronald Reagan, Hinckley, in 1981, of course, got off by reason of insanity. The 22-year-old man who shot Gabby Giffords in 2011 was diagnosed as a paranoid schizophrenic.