 ABC News. I'm Sherry Preston. New information this morning on the investigation into the attempted assassination of Donald Trump. Police think the shooter got onto the roof of that building in Butler, Pennsylvania, where he took his shots by climbing into an air conditioning unit. At the Republican National Convention in Milwaukee, strong support for nominee Donald Trump from former Republican rivals Nikki Haley, Vivek Ramaswamy and Ron DeSantis, who said of President Biden. We need