WRC NBC Nightly News August 28, 2012
one of them going on behind us here, the other happening in rough, warm seas to the west of us. isaac is a hurricane. and it's slowly churning toward new orleans where it's going to be a very long night. the coastline of louisiana, alabama, mississippi getting pounded and drenched and it's inescapably the backdrop to mitt romney's big sendoff to the general election, just 70 days away. his name was placed in nomination officially today. we have it all covered. our political team on the floor, but our weather team on the ground is where we begin. we want to go to weather channel meteo...