The U.S. Air Force on Thursday said it is going to cut 9,000 civilian jobs to save money in a “restructuring” plan.

“We are making difficult choices about how to deliberately restructure and posture the force and will continue to look for new ways of accomplishing the mission,” said Michael B. Donley, secretary of the Air Force. “We can’t afford business as usual.”

Despite the loss of jobs, 5,900 new civilian jobs will be added in other fields including intelligence, nuclear enterprise, surveillance, and reconnaissance.

The Air Force did not say exactly which jobs would be shed in the restructuring plan. A recent review said that some management areas needed to be streamlined to work better, while other high-priority areas needed to grow, according to a statement from the Force.

In the past ten years, the Department of Defense has rapidly grown. Defense Secretary Leon E. Panetta told the Senate Armed Services Committee recently that the department will need to cut around $450 billion in the next decade or so.