More than 5,000 people are hunkering down in Red Cross shelters across the Gulf Coast as Tropical Storm Isaac dumps torrential rain on the area. Red Cross volunteers from Long Island are down in New Orleans to pitch in. Volunteer Sam Kille says there's so much water in Louisiana that it "just has no where to go." Tropical Storm Isaac made landfall Tuesday evening, and officials along the Gulf Coast are preparing for significant flooding. Authorities say more than half a million people are without power.Isaac spins into New Orleans on slow slog inlandHurricane Isaac makes landfall in La.LI volunteers head to Gulf Coast to help those affected by Isaac