 NBC News Radio. I'm Chris Coraggio. Former President Trump held his first rally since last weekend's assassination attempt. Today's event in Grand Rapids, Michigan, was also his first after officially accepting the Republican nomination. He was joined by his running mate, Ohio Senator J.D. Vance. Michigan is considered a battleground state in the race for the White House. Investigators believe the shooter in former President Trump's assassination attempt may have flown a drone over the rally site for surveillance.