I don't know, but I pay attention to the movies. After all, the answers to all of life's questions can be found in the movies.
They seem to originate from one of two places.
The first group consists of fearless defenders of the American way. They were all Vietnam veteran Special Forces, or Marines in later wars, have a criminal justice degree, and have amazing latitude in legal matters. They are tough, but always see past appearances to help the innocent victims of a vast conspiracy. You cannot apply for admittance to this group - invitation only.
The second group is probably more your style. After all, you can catch a bullet with the best of them in a frontal assault on a belt-fed. Guys like you are drafted by Central Casting to die by the score fighting a misunderstood war hero or a cute and oh-so-naughy antihero. Cheer up, because just because you caught one bullet does not mean you won't catch another in a later (or the same) scene.