According to a whistleblower report from Senator Josh Hawley’s office, there were multiple issues with the Secret Service and DHS. One of the biggest shockers? The agent in charge of security for the rally apparently failed a key law enforcement exam and was considered 'low-caliber' by insiders. Even more alarming, the intelligence units, which are supposed to coordinate with local law enforcement to spot any threats, weren’t even at the event.
Sources
http://www.marvinmckenzie.org
https://www.amazon.com/stores/Marvin-McKenzie/author/B005OZV81Q?
https://www.smashwords.com/profile/view/MarvinMcKenzie
https://macz.creator-spring.com/
Secret Service, President Trump, Senator Hawley