Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
We've moved! Come join us at our new show page.
(CNN) – Australian officials say that information from the U.S. National Transportation Safety Board helped them refine the area they're searching to the southernmost part of missing Malaysia Airline Flight 370's potential route.
One U.S. Navy aircraft is helping out in the area.
CNN's chief national security correspondent Jim Sciutto reports.