this leaves a lot of room for wondering and suspecting;

Reports are coming out that the shooter was in easy view of Trump from the roof of a nearby structure. This is a location that the Secret Service would have investigated and controlled access to prior to the event, again making it suspicious that this event happened.

Witnesses claim they alerted the Secret Service to a man on the roof with a rifle and they did nothing until the assassination started...........more.........

from another link ..........more...........