I hope he’s wearing body armor too.
He is wearing a Kevlar vest as seen from a close up picture taken from his back at the Mobile rally. You can see the outline of it under his blazer just vaguely here:
http://www.google.com/imgres?imgurl=http://www3.pictures.zimbio.com/gi/Donald%252BTrump%252BHolds%252BCampaign%252BRally%252BMobile%252BAlabama%252BBx_uj8onoo2l.jpg&imgrefurl=http://www.zimbio.com/pictures/viqsEMPW2zu/Donald%2BTrump%2BHolds%2BCampaign%2BRally%2BMobile%2BAlabama/Bx_uj8onoo2/Donald%2BTrump&h=470&w=600&tbnid=UUH08iqlTcTD0M:&docid=K4QUiddHYLCJ-M&ei=s24RVqD9EYHVggSe3qeIBg&tbm=isch&ved=0CGoQMyhDMENqFQoTCOCinfu3qcgCFYGqgAodHu8JYQ
