PITTSBURGH — A worker was critically injured after falling from the main scoreboard at Acrisure Stadium Saturday night. Officials say medics, fire and police responded to the stadium. First responders learned from other stadium personnel that a man had fallen around 50 feet from the main scoreboard to a mid-level catwalk area. In a statement, Acrisure Stadium officials say the man was installing production equipment in preparation for the Steelers’ Sunday Night Football game when he fell. Once medics and firefighters got to the man, they stabilized him and loaded him into a Stokes basket, then lowered him to an ambulance waiting below using a ropes system. The public safety official says the man suffered severe injuries, mainly to his lower extremities.