Secret Service spotted Trump rally shooter on roof 20 minutes before gunfire erupted
Secret Service spotted Trump shooter on roof 20 minutes before shooting
Secret Service director grilled on failure to secure roof at Trump rally
New video shows Trump shooter climbing onto the roof at rally
Trump rally shooter used AR-15-style rifle, Secret Service says
Acting Secret Service director testifies before Senate about Trump rally security
Trump rally eyewitness saw spectator 'hit in the head’ by gunfire
Trump shooter accessed roof by climbing over air conditioning unit
Image from Trump rally shows gunman shot on roof of nearby building
Acting Secret Service chief “ashamed” of security failures at Trump rally
