Delta to Cut Up to 7,000 Jobs in 18 Months ATLANTA - Delta Air Lines will cut up to 7,000 jobs, reduce wages and pull back at its Dallas-Fort Worth airport hub as part of a sweeping restructuring plan that could still leave it vulnerable to bankruptcy.    The job cuts representing about 10 percent of its overall work force will come over the next 18 months, Delta chief executive Gerald Grinstein said Wednesday during a meeting with 300 of the company's middle managers...