
Today, an armada of ships is converging on an area about 400 miles northeast of the Brazilian island of Fernando de Noronha. Some are carrying submersibles that can work miles underwater, all to start piecing together the disaster of Air France Flight 447, which disappeared over the Atlantic Ocean.
One expert said it could be the hardest recovery since the search to find the Titanic, which took decades. Underwater recovery expert John Perry Fish spoke to John Roberts on CNN’s “American Morning” Wednesday.
John Roberts: What will searchers be looking for at this point in their operation? And what kind of topography of the ocean floor are they going to be searching in?
John Perry Fish: The searchers are going to be looking for a very important piece of equipment called a digital flight data recorder… These record many, many parameters of the flight, the aircraft, its attitude, even the amount of force that one of the pilots might put on a pedal. And it’s very important to find these in order to find out what happened to the flight. Attached to each of these data recorders is what we call a “pinger.”
It puts out an acoustic pulse once a second for 30 days as soon as it's submerged in the water and these contacts are joined by electrical forces. So it's important to find these. And they'll be looking for these in an area that's fairly deep, as deep as a couple of miles and also part of the Mid-Atlantic Ridge, which is a mountainous area that runs all the way from Iceland down into the South Atlantic.
[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/images/06/03/art_stem_family.jpg caption="Sierra Journey Factor, 8, has a muscular disease that her mom, Shaylene Akery, hopes can be treated in China."]
By Drew Griffin and David Fitzpatrick
CNN Special Investigations Unit
TITUSVILLE, Florida (CNN) - It's shortly after 5 a.m. when the phone rings, and on the line is a clearly anxious and worried parent.
"Sierra is having a lot of problems tonight," Shaylene Akery tells a CNN producer. "We have to take her to the hospital, but we still want to talk to you about her trip to China."
Her daughter, Sierra Journey Factor, is 8 years old and has a terminal disease called Type 2 spinal muscular atrophy, a genetic disorder that affects parts of the nervous system that control voluntary muscle movement. In addition, she has a restrictive lung disease and a kidney disorder. She has used a wheelchair since infancy.
Sierra's mother, her stepfather and her biological father, A.J. Factor, all know that Sierra is seriously ill. On the morning we met them, Sierra was treated at two hospitals before she was stabilized.
But the family is convinced of their next step - taking Sierra on an arduous trip to southern China, where they believe the little girl will be injected six times with stem cells during a 34-day stay. It's the kind of treatment not yet approved in the United States by the Food and Drug Administration.
Sierra's treatment will cost $26,500, which does not include the cost of travel and living for the extended family. Those costs would mean an additional $25,000, according to Akery.
"We are really walking into this blindfolded," Akery said. "It's scary, but everybody says it's so nice over there."
The family says it got most of its information from a Web site called China Stem Cell News, at stemcellschina.com, which boasts of dozens of anecdotal testimonials from loved ones who say their children or family members showed improvement after the stem cell treatments. The site offers no scientific evidence and no means of making contact except through a Web form. CNN used the form, but as of yet has received no reply.

Here are the big stories on the agenda today:
Tuesday’s American Morning audience continued question and debate regarding the murder of Dr. Tiller and the issues surrounding abortion.
President Obama is hoping his visit to the Middle East this week will begin to "change the conversation" between the U.S and the Muslim world. He'll be trying to win over the hearts and minds of millions who are still very suspicious of America's motives. Former Secretary of State Madeleine Albright joined us to talk about the challenges facing the president.
Supreme Court nominee Sonia Sotomayor is on Capitol Hill today meeting privately with Senate leaders who could decide her fate. Meantime, the current Supreme Court justices will be judging Sonia Sotomayor in a different way when they consider her ruling in a race discrimination case.

