She is a damn cyborg! I knew it!
When she quick exited the 9/11 memorial ceremony, prior to being basically thrown into the back of the van, she was leaning against a short concrete post. The van pulls-up, Hillary wobbles, something falls from her right pant leg and "clangs" on the ground. I thought it very odd at the time and the very first thing that entered my mind was she was under some sort of control that went haywire/short-circuited or something. Maybe this contraption obviously being worn is gonna be hard to hide in the coming warmer months