Most, if not all, of the dramatization supporting cast have also been the supporting cast in "I'm Not There," "Warm Bodies," "The Bone Collector," and "White House Down." This is because all of these films were shot in Canada.
The film is not about Oswald or his background, but rather the science, ballistics and evidence from Dealey Plaza.
In a cover up theory that proposes a vast amount of omissions committed by the government, McLaren's theory of an "accidental" assassination with the AR-15 does not question why an explosive, hollow-point bullet was involved.