United Argues It May Terminate Pensions CHICAGO - United Airlines would be within its rights to terminate its employee pension plans but hasn't yet decided to do so, an attorney for the carrier said Friday, as two unions urged a judge to block a financing plan they say is predicated on the airline halting fund contributions.    The hearing came a day after the release of court papers in which United warned it "likely" will have to end those pension funds in order to secure the loans it needs to get out of bankruptcy...