CHICAGO(AP)OnJan. l,anorderwentintoeffectrequiringth...
问题详情: CHICAGO(AP)OnJan. l,anorderwentintoeffectrequiringthateverycheckedbagatmorethan400ofthenation'scommercialairportsbescreenedforbombsandweapons. Sundaywasexpectedtotheheaviesttraveld...