analyst and vice president at williams and associates. this british ship, the "hms echo" arrived in the area where the chinese heard pulse signals. does it mean we're taking this very seriously, at least the australians, rob? >> yes, it does. it mean there's been a trigger of interest and now the acoustics need to be verified. the best way to do that is get more assets in the water, bring in another ship with acoustic capability or drop sonar. this the way to go. >> the chinese have taken the lead of their own search selecting the area and came across pulse signals. should australians believe any sharing of information or cooperation now that a british ship with supposedly more high-tech equipment than that of the chinese. they would have to work