9:53 p.m. ET: "Nightline" anchor Terry Moran continues his coverage of the Republican National Convention and tweets this:
There's word that Romney might be going to Louisiana to visit storm victims, then return to Tampa to give his big speech.
- Terry Moran (@TerryMoran) August 30, 2012
7:14 p.m. ET: A member of America's elite and secretive SEAL Team Six stepped out of the shadows - but still apparently in disguise - to make his first public appearance to talk about the historic raid that killed al Qaeda leader Osama bin Laden on CBS News "60 Minutes."
video platform video management video solutions video player Writing under the pseudonym Mark Owen, his book leaked today to two news outlets, describe the gruesome scene when Osama bin Laden died and offer details that appear to contradict some of the "official" account, according to the news organizations that obtained copies of the book.
6:01 p.m. ET: "Nightline" anchor Bill Weir getting ready to go live from downtown New Orleans to report on the latest with Tropical Storm Isaac.
4:26 p.m. ET: "Nightline" anchor Bill Weir tweets from Braithwaite, La., where he has been covering Isaac:
4:11 p.m. ET: "Nightline" anchor Terry Moran tweets from the RNC in Tampa, Florida:
3:07 p.m. ET: Although Isaac is still a dangerous storm, causing monstrous flooding over much of southern Louisiana and Mississippi, the National Hurricane Center has weakened it to a tropical storm. Susatined winds dropped to 70 mph.
2:05 p.m. ET: FOOD FIGHT! Well, actually just TOMATO FIGHT!
Revelers play in tomato pulp during the annual "tomatina" tomato fight fiesta in the village of Bunol, near Valencia, Spain on Aug. 29, 2012 where an estimated 40,000 people, some from as far away as Japan and Australia, took up arms with 100 tons of tomatoes in the yearly food fight known as the 'Tomatina' now in its 64th year.
12:20 p.m. ET: "Nightline" producer Mary Marsh sent in this photo of "Nightline" anchor Terry Moran waiting with Maricopa County Sheriff Joe Arpaio for the shuttle bus at the RNC in Tampa, Fla., Aug. 29. Arpaio is scheduled to address delegates from western states at a special "invitation only" reception on Aug. 30.
12:13 p.m. ET: "Nightline" producer Brandon Baur sent in this photo of a rescue mission taking place outside of Braithwaite, Louisiana:
11:44 p.m. ET: ISAAC: ABC News meteorologist Ginger Zee tweets from Gulfport, Mississippi:
10: 52 a.m. ET: Who says protesters don't have a sense of humor?
Demonstrators walk during a protest, Tuesday, Aug. 28, 2012, in the Ybor City section of Tampa, Fla. Protestors gathered in Tampa to march against the Republican National Convention.
9:40 a.m. ET: DEVELOPING: Hurricane Isaac pounded the Gulf Coast Wednesday, overtopping a levee southeast of New Orleans, knocking down trees and cutting power to more than 400,000 homes.
The ABC News Extreme Weather Team will be updating this story as it develops HERE
NASA's Earth Observatory posted this photo of Isaac, taken early Wednesday morning: