    Sentence 1: Salem al Hazmi cleared  the. metal detector and was  permitted through; Nawaf al Hazmi  set off the alarms for both the first  and second metal detectors and was,  then. hand-wanded_ before. being  passed.         Sentence 2: The hand-wand didn't  detect metal on Nawaf al Hazmi  even though the first and second  metal detectors did.    