i m amara walker. i m boris sanchez. thank you for starting your week and spending part of your morning with us. there is plenty to get to this sunday. here is what we re watching. i think this is an effort that s ongoing never ending to destroy donald trump, everything around donald trump. politicians on both sides of the aisle reacting to the news that former president trump could be indicted this week. how trump s team and new york officials are preparing for that possibility and potential fallout. also, russian president vladimir putin makes a surprise visit to the russian occupied city of mariupol days ahead of a high stakes meeting with president xi jinping. ivan watson is standing by in ukraine with more. what would you say the weight of the job is? you hold people s lives in your hands. following a series of close calls at the nation s airports, cnn is getting an up close look how the next generation of air traffic controllers are training to keep us safe
and at the university of north dakota air traffic control can be simulated. really slow to really busy. we can have aircraft coming in on final. w we can have no air. reporter: or when things don t go as planning. in a january jfk incident a flight crossed in front of a delta air lines flight cleared for takeoff. while the ntsb is still investing, through the simulation we see it may have come down to communication. most likely the american aircraft was on ground control. the controller controlling delta i am not talking to that american traffic. reporter: all right. i have got american airlines. meanwhile, you are in your own world. yes. reporter: talking to delta. i am going to do something with my delta aircraft, tell them to cancel, traffic on the runway. reporter: the actual radio traffic? it sounded a little different.