Passengers deplaned in Iowa as airline scrambled to find replacement crew after flight attendant fight
                                
                                
                                    (Newser) -
                                    A United Airlines flight from Des Moines, Iowa, to Chicago was delayed more than four hours on Monday, but not for any of the usual reasons. Passengers boarded Flight 2138 expecting a quick trip, only to be caught in the fallout from an apparent onboard blowup between two flight attendants,...