“the FBI groomed and prepared several hitmen in the critical swing states and the plan was to activate one of those cells when the Trump campaign announced a nearby rally. Crooks lived 45 miles away from Butler.”
That is the Deep State method of operation—and they tend to stick to tried and true templates.
For the JFK assassination they had three teams set up—the last two were in Chicago and Dallas. The Chicago site had logistics issues.
In that case the CIA controlled all logistics and recruitment of assassins. The recruiter and development of designated patsies appeared to be the responsibility of James Jesus Angleton, Counterintelligence Chief of the CIA.
E. Howard Hunt was in charge of logistics in Dallas. He named four other CIA employees who were part of the assassination planning:
—David Atlee Phillips
—Cord Meyer Jr.
—William Harvey
—Frank Sturgis
https://www.amazon.com/Bond-Secrecy-Watergate-Conspirator-Howard/dp/1936296837
Cord Meyer Jr. is a fascinating story. He was Chief of Station in London so one might wonder why he might be involved. It turned out that JFK had slept with his wife and ruined his message—and the now divorced Mr. Meyer did not get mad. He just got even.