11000 #planes in the #sky right #now. Amazing they don't all
   #crash into each other. Takes a lot of #human involvement to
   keep it very #safe
   [vine id = "MVJhrxZAdJB"]
   11000 #planes in the #sky right #now. Amazing they don't all
   #crash into each other. Takes a lot of #human involvement to
   keep it very #safe