Libyans haunted by the fate of flood's missing

A week after the flood that swept the center of the Libyan city of Derna into the sea, families are still coping with the unbearable losses of their dead - and haunted by the unknown fates of the missing. Amid the desperation, men in white hazmat suits spray disinfectant mist from hoses in backpacks, as authorities hope to halt the spread of disease. Edward Baran has more.