>> and right now democrat candidates are in south carolina talking jobs and the economy and delivering their message to black voters. i'll speak with the head of the naacp about the campaign and who is standing out. plus 16 shots. a new documentary shines a spotlight on one of the darkest chapters in chicago history. the laquan mcdonald shooting and the alleged police cover-up and i'll speak with the reporter who brought the scandal to light. and we're keeping an eye on a situation in newark airport. breaking news, a plane that made an emergency landing. we got a statement from the faa moments ago. we'll bring it to you shortly. but let's start right here at this hour with the u.s. putting iran on notice as tensions remain high after president trump and his administration blamed iran for the attack on two oil tankers in middle east. >> well, iran did do it. and you know they did it because you saw the boat. one of the mines didn't explode and it is probably got essentially iran written all