KANSAS CITY, Mo. — It was only minutes after tight end Travis Kelce addressed the overjoyed crowd at Union Station on Wednesday that the mood changed dramatically. Gunshots rang out just west of Union Station, leaving at least one person dead and nearly two dozen injured. The Chiefs were inside Union Station and some of them helped calm frantic fans. Players, who a short while later were transported to Arrowhead Stadium, sent prayers to the victims, and some called for stronger gun laws. Kelce, who had made fans laugh with his unique rendition of a Garth Brooks classic at the celebratory rally…