Prior to the assassination attempt, the Trump Campaign had written to Director Cheatle criticizing them for a weak security premier plan at the Republican National Convention that would put attendees at risk. This would imply the perimeter problems that permitted a shooter within 150 yards of @reallegitimatePOTUS are a pattern and not a one off. 

> The Trump campaign on Thursday fired off a letter to U.S. Secret Service Director Kim Cheatle, demanding she fix a "critical flaw" in the security perimeter of this summer's Republican National Convention, claiming that attendees' safety is at risk as protesters plan to descend on the area.


https://abcnews.go.com/Politics/trump-campaign-accuses-secret-service-critical-flaw-rnc/story?id=110507764
https://archive.is/JZE4d