usaa. what you're made of we're made for tonight, several developing stories as we come on the air. after president trump takes aim at the head of the cdc, dr. robert redfield, and what he said about a potential vaccine and timeline, the nation's top doctors tonight come to dr. redfield's defense. and what dr. anthony fauci is saying about when millions of americans will likely get a vaccine. the president offering his own timeline, much closer to the election. and all of this as the u.s. now nears 200,000 american lives lost. tonight here, a reality check. abc news reaching out to the leaders, the scientists leading more than a half dozen vaccine trials. so, what do they say about when there could be a vaccine and when americans could get it? also, the new obstacles for schools. new york city schools and the setback.