Isaac weakens to a tropical depression over La.
Isaac Louisiana
Helen Blouin holds on tight to Sgt. Julius Cage with the Louisiana National Guard as she is off loaded at a shelter in La Place, Louisiana. The state sent scores of buses and dozens of high-water vehicles to help evacuate about 3,000 people from St. John the Baptist Parish after Tropical Storm Isaac pushed water from lakes Pontchartrain and Maurepas into parts of LaPlace. (AP Photo/Arthur D. Lauck, The Advocate)