Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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(CNN) – Twenty-five days in and Malaysian police say they remain focused on the pilots and anyone who had contact with Malaysia Airlines Flight 370 before take off, ranging from those who prepared on-board food to the ones who packed the cargo.
Meanwhile, more ships have been dispatched to aid the search, including a British submarine with advanced sonar. The Australian ship Ocean Shield reaches the zone in another day. On-board is a pinger locator designed to find beacons on the black boxes, which will stop pinging in days – if they haven't already.
CNN's René Marsh reports.