America’s upcoming milestone birthday will be celebrated at Falcon Stadium with four million pounds of specialized dirt, 30 of the world’s top bull riders and a concert from a three-time Grammy Award winner. The United States Space Force and PBR (Professional Bull Riders) are teaming up for the June 20 event, being called “PBR Space Cowboys Presented by the U.S. Space Force,” that is part of the America 250 celebration at the Air Force Academy. Country music star Tim McGraw will headline the concert along with Chris Janson. The bull riding portion will see the 30 competitors divided into three teams of 10 via a draft. They will then be matched against bucking bulls in 8-second matchups. As with Air Force football games held at Falcon Stadium, there will be flyovers and parachute landings. A large-scale drone show is also planned. “We’re proud to partner with the United States Space Force for this historic America 250 event,” said Sean Gleason, CEO and commissioner of PBR.…