>> that's chilling. >> it is. >> don, she says that she just knew. she can't explain it. she just knew that he would eventually end up killing people. >> so rosa, joelle made a call to 911 in 2016 expressing concern to authorities about cruz's violent tendencies. nothing ended up being done. why was it and tell us more about this call. >> you know, we had heard about the call. but until now, until we talked to her, we know more of these chilling details. she says she was in her kitchen, her son walked in showing her a post that cruz had posted on instagram showing an ar-15 style rifle, cruz saying he couldn't wait to turn 18 so he could purchase this gun. then later, another post saying that he wanted to shoot up a school. that's when this woman said she picked up the phone and called 911.