how serious is that? that really is upper level there, holding people accountable. >> it's one of the top officials there in a statement from the faa, the administrator said krakowski offered his resignation. there's little doubt it's related to this recent string of incidents at some of the nation's airports. babbitt goes on to say his review of the situation is continuing and he says he will do whatever is necessary to keep air travel safe. >> you've been covering these stories. this is the third recently we've heard about, a guy in the control tower out of commission, falling asleep. how big a problem is this? >> well, there were a couple others that were revealed yesterday by the faa as well. one in seattle where a controller is believed to have fallen asleep. also a couple of controllers in trouble in lubbock, texas for apparently able to hand off an