we have captain dave funk, a retired commercial pilot, live this morning for us in des moines, iowa. shawnenry, formerly with the fbi is still with us. and msnbc aviation andalyst joh cox. gentlemen, thank you all so much for being with us. as we are looking now at possible pieces of debris in the southern indian ocean, even if we locate those pieces of debris, how difficult will it then be to find the black box? >> difficult but not impossible. the nice thing is with the amount of data we have today about ocean currents and air currents, they should be able to reverse engineer this and work backwards to figure out close to the point of impact if it turns out this is actually what happened. it narrows the certificate of area down from the size of the state of massachusetts to maybe the size of the city of boston. down on the bottom to start finding pieces. there are some sophisticated sup submersibles out there today, robotics, that can go down and cut the pieces of the fuselage open to get out what we need to. any investigator is not only going to want to recover the black boxes but the c