pretty cute. >> he is dressed, though. he has a tuxedo on ready to go. >> dressed to impress. allen and veronica will see you in 30 minutes. >> mason: congress will like this: facebook is turning over thousands of ads linked to russia for the election meddling investigation. and mark zuckerberg makes a pledge: >> we're going to make political advertising more transparent. >> mason: also tonight, the race to save lives from the floodwaters of puerto rico and the rubble of the mexican earthquake. tests show former football star ron hernandez, who took his life in prison, had severe brain disease caused by head trauma. and dr. jon lapook rides the "starship enterprise" back in time to look into the future.