"The fact that General Electric remains committed to working with us is an enormous boost for our restructuring efforts and the implementation of our transformation plan," said Bruce Lakefield, chief executive of US Airways, in the release. "We still have a lot of work to do, beginning with the completion of labor negotiations with those remaining unions that still do not have cost-savings agreements in place." Last month, US Airways' pilots agreed to a five-year concession package that includes 18% pay cuts, increased work loads and company contributions to the pilots' retirement plan. The airline estimates the concessions, which had proved contentious among pilots, will save it about $300 million a year. US Airways has also reached an agreement with the union representing its flight training instructors and dispatchers. But the airline is seeking roughly $600 million more in annual savings from other unions.