The Iowa gunman who opened fire on Perry High School last week appeared to have an active account on the internet chat platform Discord where he previously discussed school shootings and described “gearing up” moments before Thursday’s attack.... (A) Discord user said they had flagged the chatroom to the FBI in November, after which an FBI agent reached out over email and asked for more information. The user emailed the FBI agent screenshots of the server but did not hear back. The user said their report to the FBI did not include mention of the user “took2much.” The chatroom was...