    Sentence]: By. 9:08,. the. mission crew.  commander .at_ NEADS Jearned™of.: the  second. explosion” at the’ World’ Trade.  Center and decided ‘against holding the.  fighters.ij military airspace away fr@m         5 ao  ‘Sentence. 2: The second explosion at the.  world” ide’'.center happened after.  9:30am:    