Former DHS official 'not surprised' by Trump rally shooting
Acting Secret Service chief “ashamed” of security failures at Trump rally
Acting Secret Service director testifies before Senate about Trump rally security
Secret Service director grilled on failure to secure roof at Trump rally
Secret Service spotted Trump rally shooter on roof 20 minutes before gunfire erupted
Secret Service spotted Trump rally shooter on roof 20 minutes before gunfire erupted
Secret Service director takes responsibility for security breach at Trump's Pennsylvania rally
Former senior Secret Service agent discusses response to Trump rally incident
Trump rally shooter used AR-15-style rifle, Secret Service says
Secret Service rushes Trump off stage at Pennsylvania rally
