"The man is dressed like a secret service agent but his actions prove otherwise.
In a recent campaign stop in a Union Hall in front of a sparse crowd, at about the time when some liberal protesters began to protest, Hillary Clinton suddenly froze. She looked dazed and lost. Seeing this, a group of men rushed to assist the candidate on the stage.
One man however gently pats the candidate’s back and then says, “Keep Talking.”"
http://www.thegatewaypundit.com/2016/08/hillarys-handler-disappears-campaign-trail-alt-media-points/
Perhaps the DEA was on his tail...