Transcripts for CNN Wolf 20140407 17:58:00

one of the areas to search. >> how do they triangulate the ping location? can it be done? >> it can be done but you have got to get a couple of locations. >> that's why the u.s. navy says they are cautiously optimistic of the acquisition of the two signals is optimistic but still only cautiously optimistic pending visual confirmation. >> the old shield is going to get back over and reacquire that thing from a different location and start locking it in. >> here is is a question from tammy. could boxes be separated from the plane, the voice recorder, data recorder, could they be separated from the plane? the plane be in a totally different location? >> it would not be in a totally different location. the black boxes would be in the