The three men arrested in Colorado posed no real threat to Sen. Barack Obama, according to federal authorities. Still, the fact that one of them carried a rifle, scope, bullet proof vest, and said threatening things about the candidate only adds to the worry many have over the safety, and the security around, Obama. Obviously, much of the protection (including Secret Service guards) is secret, and behind the scenes. But, we've heard assurances that both candidates are as protected as possible. As we wait on tonight's acceptance speech in front of tens of thousands at Denver's Mile High stadium, are there fears in the back of your mind for Obama's safety?