investigators talking just a short time ago, after an american helicopter tour goes down, killing everyone e onboar. >>> the deadly spring storm, and tonight, the deep freeze now. snow and concern over black ice for drivers, that cold here to stay. >>> the flight attendant just fired after suddenly deploying the emergency chute in houston. and you'll see it right here. >>> and the passenger who called 911 to warn authorities about his uber driver. >> he kept driving. >> passed from dispatcher to dispatcher, not once, but three times. an hour later, tt

investigators talking just a short time ago, after an american helicopter tour goes down, killing everyone e onboar. >>> the deadly spring storm, and tonight, the deep freeze now. snow and concern over black ice for drivers, that cold here to stay. >>> the flight attendant just fired after suddenly deploying the emergency chute in houston. and you'll see it right here. >>> and the passenger who called 911 to warn authorities about his uber driver. >> he kept driving. >> passed from dispatcher to dispatcher, not once, but three times. an hour later, that uber driver, accused of going on a murder spree. >>> good evening. and it's great to have you with us here on a tuesday night. and let's get right to it. wisconsin voters could very well change the course of this race. donald trump needs a win if he wants to land the delegates he needs for the nomination. he could still do it, but it would be extremely difficult. his wife melania back campaigning with him after a bruising few days. ted cruz leading going into tonight, and this evening, the first major sign of what could come. in the exit polls alrea