first reply went poof.....
so i'll keep it short. you are reacting to his WORDS....that is all they are, WORDS.....he has yet to put any of them into ACTION. so you take it week by week. THIS week. you told the kids, they are prepared. they may lose sleep, but they'll survive. you have them ready to go at the appropriate time.
don't freak out. he isn't taking them on a cross country robbery spree. don't blink, don't waiver, ACT as if his puny little threats mean nothing to you. do not even acknowledge. be chill like ice.