Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
The latest news on the crisis in Ukraine, plus a look at the technology aiding in search for Flight 370.
(CNN) – Results from alcohol breath tests for the train engineer of the New York commuter train that derailed Sunday morning were negative, and both the brake and signal systems in the deadly Metro-North accident appeared to be working, National Transportation Safety Board representatives said Tuesday.
Meanwhile, while two law enforcement sources told CNN that engineer William Rockefeller reported being in a "daze" before the crash.