Doing Dr News Today

scrambling to cover the cost. and the swimmer defying the odds and "inspiring america." >> announcer: this is "nbc nightly news" with lester holt >> good evening, everyone when it rains it pours, but rarely like this tonight, an unraveling emergency continues to unfold across swaths of the southwest as severe flooding leaves several areas under water or caked in mud. in texas, arizona, and new mexico fast rising floodwaters triggered some harrowing rescues and shut down major thoroug...