    Sentence 1: NORAD officials: have ‘inaintained  Consistently that had the passengers not caused  ‘United 93: t0\'ctash,: the militdry would ‘have  preverited it froi reaching Washingtori, D.C.    Sentence 2: NORAD: officials have: maintained  that military’ would have” shot it down “if: the  passengérs:” hadn't’ | crashed” it: first”. in  Pennsylvania, ee