Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
Continuing coverage of Malaysia Airlines Flight 17. Plus, the latest on Mideast tensions.
(CNN) – There have been four near misses between jetliners reported in the last few weeks, and those are only the ones that we know about.
How does this keep happening?
Former Chicago's O'Hare airport air traffic controller, and "Secrets from the Tower" author Bob Richards weighs in.