“Go go go” secret service agents could be heard shouting as Former President Donald Trump ducked down after a shot rang out in the crowd at his rally in Butler, Penn., on Saturday, July 13,” RadarOnline.com can reveal. Trump then seemed shocked by what was happening and could be heard on the microphone on an MSNBC video saying “Let me get my shoes!” The gunfire broke out and caused chaos among attendees leaving the former president spattered with blood. Trump, who was swiftly evacuated by security, showed a defiant gesture to the crowd before being ushered to a car. The Secret Service confirme…