Donald Trump spoke behind bulletproof glass Wednesday at his first outdoor rally since he was grazed by a bullet in an assassination attempt in Pennsylvania last month. Fox News reports that around 2,500 people were expected to attend the rally, which was held between hangars at the North Carolina Aviation Museum in Asheboro. The glass formed a barrier across the stage, but Trump stepped out from behind it to hug an attendee who needed medical assistance, WFMY reports. Other signs of heightened security at the North Carolina rally included multiple security personnel with sniper rifles on near…