This one almost appears to have the First Lady looking backwards at the commotion. It may or may not be here, but she did look back with the President turned and went over to help out. She appears very small, inside the room next to another woman.
Great photos, AmericaninTokyo. I just wish that agent had grabbed one Chilean thumb and turned it a new direction. It's quick, silent and effective. Down goes the Chilean security guards. Agent walks away.