President George W. Bush today said he'll do whatever he can to prevent airline strikes this year, starting with Northwest Airlines. The president signed an executive order this morning creating a Presidential Emergency Board, preventing Northwest's union mechanics from striking for almost two months. The union had said it might stop work as early as Sunday night. Mark Zdechlik of Minnesota Public Radio reports from Arlington, Virgina, where 11th hour talks between the airline and the Aircraft Mechanics Fraternal Association have been underway since Wednesday.