More details are emerging about 24-year-old Connor Betts, who carried out the massacre in Dayton, Ohio, killing nine, including his sister. Classmates said Betts, who was killed by police, fantasized about killing people as far back as high school. Photos on his Myspace page from 2013 show his face covered in a bandana. He posted bizarre scribbles that say “bloody massacre,” “absolute carnage” and “all must be annihilated." Former classmates described Betts as a walking time bomb.