. >> samira calehr: i want to know who killed my children. >> pelley: it was july 17, 2014, that samira her boys, 19-year-old shaka and 11- year-old miguel, as far as amsterdam airport security would let her. the youngest boy was worried. >> samira calehr: he hugged me really tight. and he told me, like, "mom, i'm so afraid to take this plane. you know, i'm so afraid what happen when the airplane will crash?" i told him, "miguel, come on, you've been on flights many times. you are with shaka. everything is going just to be fine." he said, "you promise me?" i said, "i promise everything will be okay." the brothers were going to see their grandmother in bali. samira planned to come back to the airport the very next day because her middle son, mika, couldn't get a seat on flight 17. >> mika calehr: so, i never got a proper goodbye, said a proper goodbye, and that really is something that i have to deal with for the rest of my life. >> samira calehr: i cannot forgive myself that i promised my baby, miguel, that everything will be fine. who am i to tell him that everything's going to be okay