Trump shooting: Five things we learned from Secret Service boss - BBC.com
- Trump shooting: Five things we learned from Secret Service boss BBC.com
- How the Secret Service determines a suspicious person from a threat: ANALYSIS ABC News
- Acting Secret Service boss 'cannot defend' why roof in Trump rally wasn't secure National Post
- Acting Secret Service chief says attempted assassination of Trump could have been prevented NBC News
- Video: Secret Service Acting Director Testifies on ‘Failure of Imagination’ The New York Times