I doubt that guy is Secret Service, I am sure their tactical training doesn't include hair pulling. Probably some local GOP wannabe who thought it his place to act like a tough guy. No different than the union thugs the dems use. Just as stupid.
... and if it was a GOP "wannabe" who came to listen, was he supposed to move to the other side of the room just to permit this heckler to interrupt his listening, and goals? Or perhaps gotten on his cell and called the police to her her removed? Sported his "sheetmetal workers" shirt, and thrown her to the ground in a headlock?
How do we know the guy wasn't a Kerry operative working in cahoots with the woman to try to generate the picture. And just who took the picture? Get ready for "HairGate."