the towns where zach and georgia were teaching. the frantic calls began, to no avail. >> what happened when you tried his phone? >> it would say all circuits are busy and you'd get a busy signal. >> then the minutes went by. >> uh-huh. >> then an hour and two hours. what did that feel like? >> hell. >> as a parent, you never think, oh, my child has been killed. out don't think that. you just wait. you just wait and pray for the best. >> remember, zach had wanted to come home months earlier, but terry and john had encouraged him to stay, to live up to his commitment. >> how much did you beat yourself up about that? >> i did. >> seemed right then, but now? >> the helplessness of we're way over here and there's not a thing we can do. >> georgia's family in new zealand including cousin chelsea