Define "in the vicinity." The Secret Service defines it as within their secure perimeter in which they are lawfully authorized to disarm anyone wishing to enter regardless of state or federal law concerning possession of weapons, and they have things quite well in hand judging by their track record.
We're not talking here about someone "in the vicinity." We're talking about someone down the road and around the bend. You sure couldn't glean that by MSNBC's breathless reporting, but that's the facts of the matter.
Reagan might not have been so sure of that, it was just a "GREAT Thing" that Hinkly only had a .22 revolver.
Nor Ford, two *women* got inside the perimeter in separate instances in September of '75, and one, well known member of the Manson "family, "Squeaky" Fromme", would likely have shot him if she'd had a round in the chamber of her .45 Colt automatic, instead of just a loaded magazine. The second one, Sara Jane Moore, also a Mansonite, was 40 feet away from Ford when she fired a single shot at him, but missed. A bystander, not the Secret Service, tackled her to the ground. That was after she'd phoned in a threat the same day and been picked up. Her .45 was taken, but she was released. She simply bought another one, and pressed on. Her shot ricocheted and injured a bystander.