 ABC News, I'm Sheri Preston. The speeches at last night's Republican National Convention in Milwaukee were all about coming together under Donald Trump. Tonight, vice presidential pick J.D. Vance will deliver his speech in Milwaukee. ABC's Catherine Foulders with a preview talking about Donald Trump's running mate. How does he continue that message of unity? She's saying she was at an event yesterday with the Republican National Convention chair who was talking about how speeches are being edited and they are changing their message following the assassination attempt.