CNN The Lead With Jake Tapper April 8, 2014 01:38:00
Welcome back to the lead. continuing our world lead, missing malaysian flight 370 and signals that may be coming from the black boxes. separate pings were detected by an australian ship and a chinese ship. tonight we're learning the pings detected by australian's ocean shield were a lower frequency than the standard for black box pingers and the reliability of the information from the chinese ship is in doubt for many reasons. so is hope fading yet again? joining us now from boston, thomas altschuler. he has a company that manufactures the ping detector and from florida, chris from pinger make...