The Blue Budget:

If the Air Force budget number ($130.4 billion) seems a tad high in comparison to the other services (Army at $111.8 billion; Navy/Marine Corps at $127.4 billion), it’s probably because the DOD number includes what is termed non-blue dollars—$24.5 billion to be precise. The Air Force-specific 2007 budget amount is actually $105.9 billion, which is only slightly more than the $105.5 billion enacted for fiscal 2006. The nearly $25 billion “extra” the Pentagon would allocate to USAF goes toward programs and functions that support other services not the blue Air Force.