Ping Batteries News Today

And probably in the search so far, its the -- its probably the best information that we have had. >> the plane and its 239 passengers and crew, of course, have been missing for more than 30 days now. and time is running out on those black box ping batteries. they could already be out. we dont know. nbcs ian williams has more on the new challenges of the search from perth, australia. >> reporter: good day to you, chuck. this is being described as the most promising lead yet, but the search coordi...