>> reporter: sadie baze was still in shock and you can tell there. we let her go after asking that question. she tells me she expects her 16-year-old daughter to walk through the front door of her house and she knows that is never happening again and something she is struggling with and a quick update on the investigation. we know, according to a source close to the investigation, that this gunman acted alone. initially, there were two people taken into custody in addition to the gunman they believe that were persons of interest. those two people have since been cleared. we also know that this was not months in the planning. it was actually, according to this source, probably about a few weeks. victor and christi? >> nick valencia there for us in santa fe, texas, thank you. shift to go national politics here. president trump could be weeks away from the biggest meeting of his presidency thus far and this with north korean leader kim jong-un. next, why he is calling, again,