lives in the attempt futile attempt to try to get out there and rescue or retrieve evidence. >> all right. david, thank you so much. always appreciate your expertise. >> thank you, fredericka. as more victims and debris are found and recovered in the waters off indonesia, it seems more and more likely search crews ultimately will find flight 8501 at the bottom of the java sea. it's the point of view of so many. it's a relatively shallow body of water. about 100 to 150 feet deep. that's in large part why. hopefully making the search and the salvage operation easier. cnn joe johns reports on what it may take to recover the plane from the sea floor. >> how do you pull the plane up from the bottom of the ocean? >> what you want to do first is to really map the entire accident scene. >> we spoke with peter, a former investigator with ntsb who worked on the recovery and rebuilding of twa flight 800, that crashed after takeoff from