Pennsylvania State Police identified Trump shooter as ‘suspicious’ before attack  NBC NewsRooftop bodycam video shows confusion among officials, rifle shooter used in deadly attempt on Trump  Fox NewsSecret Service director steps down after assassination attempt against ex-President Trump at rally  The Associated PressHow the Trump Rally Gunman Had an Edge Over the Countersnipers  The New York TimesGraphic video shows Thomas Crooks dead moments after Trump assassination attempt, confirms Secret Service was warned  New York Post