Came to a rest, retrieving it wont be easy. The water, the ocean level at this level is almost three miles deep. 2. 8 miles in depth at that location. And the batteries on the black box as you well know at this point are expected to start running dry. Lets start our coverage with Erin Mclaughlin live in perth, australia, where is a little more than 1,000 miles from where the signal of the ping was picked up. Erin, what are you hearing from perth . Reporter well, extraordinary. Promising. Encouraging. All word that having used to describe the discovery made aboard the australian vessel the ocean shield today there is new hope four missing Malaysia Flight 370. A month into the search for flight 370, officials announce what they describe as an encouraging lead. The ping on the hms ocean shield has detected signals consistent with those of aircraft black boxes. The audible signal sounds to me just look an emergency locator beacon. Reporter the ocean shield picked up two distinct pinger ale