I am surprised they remembered to leave a rifle.
Oh they wouldn't have forgotten the rifle ....It was THE instrumental piece of evidence in the framing of Lee Oswald. Lee really tossed a monkey wrench into their plot when he wasn't on the sixth floor at the time of the murder. If he had been there then it would have been a snap open and shut case....With the spent shells, the rifle, and Lee's corpse all right there as mute evidence that the Castro lovin commie had shot JFK, and he'd been shot and killed by an alert law enforcement officer ( The 175 pound man who was dressed like a deputy sheriff in a khaki uniform and who was armed with a hunting rifle with a scope)
The carcano had been hidden beside the logical escape route, beneath the boxes of books before the murder, but nobody would have asked any questions about when the dead commie had hid the rifle..... As the events unfolded ...they had to wait about 48 hours before they could silence that no good Castro lovin commie.