Orlando Harris

The teen who carried out the fatal shootings Monday at a St. Louis high school had a list of names he planned to target, wanted to be the deadliest school shooter in U.S. history and planned his assault for weeks, he wrote in a notebook that police found in his car after the attack. Orlando Harris, 19, said in the notebook that he knew he had mental health problems but felt that none of the medical professionals he worked with was taking his concerns seriously.