Intensifying tonight. The head of the Postal Service says he is committed to election security. President trump meantime continues to warn of a catastrophic and delayed outcome, seriously delayed. Correspondent Kristin Fisher start this off tonight from the north lawn of the white house where the president is preparing for his big renomination week. The Republican National convention is going to look a little bit different than what you saw the democrats do this week. The republicans are planning for an audience on the south lawn of the white house when President Trump speaks there on thursday night and also planning for more live and less taped events, but the biggest will be the messaging and already President Trump is turning one of joe biden signature lines from last night on its head. Were joe biden sees american darkness, i see american greatness. Weve mobilized american industry like never before. Weve built military hospitals from scratch, produce lifesaving therapies and are o