Two of the eight men indicted in an alleged drone and sniper plot to attack President Donald Trump’s UFC cage-fighting event on the White House lawn have pleaded not guilty to federal conspiracy charges. Nineteen-year-old Tycen Proper, of Danville, Ohio, and 21-year-old Chandler Scaggs, of Chapmanville, West Virginia, entered their pleas Thursday in federal court in Columbus, Ohio. Judge Edmund Sargus Jr. scheduled their trial to begin Sept. 14. Proper, Scaggs and six others are charged with conspiracy to provide material support to terrorists and conspiracy to commit murder on federal government territory and of a federal government official. The UFC Freedom 250 event was held in June to celebrate the nation's 250th anniversary.