Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
The latest on national protests. Plus, what went wrong in Yemen rescue attempt?
(CNN) – As the days stretch on, it's impossible to ignore the parallels between the disappearance of Malaysia Airlines Flight 370 and some of the most nagging mysteries in the history of aviation, many of which remain unsolved.
CNN's Jake Tapper reports.