Arizona officials said the man arrested in several shootings of a Democratic National Committee office in Tempe had more than 120 guns and over 250,000 rounds of ammunition in his home, leading law enforcement to believe he may have been planning a mass casualty event. Police identified him as 60-year-old Jeffrey Michael Kelly. Kelly is facing three felony counts of terrorism acts, two counts of shooting at a residential structure and two counts of unlawful discharge in connection with the shootings, Tempe police said. MORE: https://www.wthr.com/article/news/local/suspect-arrested-connection-with-attacks-valley-dnc-office-hanging-suspicious-white-powder-from-political-signs/75-3f87a949-88f6-481d-bb52-8e342d111b47