honed in on where this beacon may be? >> well, there are two search areas. there is the very small search area which is where they're locating the pings. only about 20 miles by 20 miles where they're locating the pings. the larger search area being discussed is about two to 300 miles further west. and that is the big large area where they're searching for the surface debris, the floating. so the -- the current search area where ocean shield and hms echo are is where they're looking for the black boxes, the actual main body of wreckage on the ocean floor. and hms echo is there, arrived there last night to do a echo search of the bottom. the silt on the bottom will give a soft return, metal object, a large metal object hopefully will give a harder return. and that will be a very broad sweep. and that will give us even more