or uncover something unexpected far closer to home. sometimes you might need to look back to see how you got here. and where you might be heading. and just when you think your journey has reached an end you will be surprised to find it is only just beginning. but you will keep going because it is your journey. wherever it goes. good evening, everyone, 8:00 p.m. here on the east coast of the united states, 8:00 a.m. off australia's west coast, breaking news in the missing flight 370, a string of developments that raised questions and some hope. we're waiting for word from officials about a possible ping sound from the water. now, that will make five pings if it is verified and could