USAF Maintenance and Procurement Outlays, and Combat Inventory
Now, just a quick note, the outlay figures are different from the last graph because in this one I am using the total obligation authority (TOA), which contains all budget authority (the numbers used in the previous graph), and authorized credits and transfers from other accounts. I think this provides a more accurate picture of USAF sustainability (the ratio between number of aircraft and costs). The inventory is shrinking while its sustainability cost is increasing. I suspect that this will become more profound when the F-35 enters service. In this aircraft's particular case, the USAF intends to purchase between 1,000 and 1,300 aircraft, well below the 1,600 platforms necessary to not diminish America's air power. And, already, the procurement process is facing cost overruns, delays in acquisition, and diminishing orders, which will only push the outlays and inventory size further apart.
At what point does this trend become a national security risk? What is the future of air power threats (not only peer competitors, but also the development and proliferation of air defense systems)? How long can the USAF (and the US economy) sustain a prolonged conflict with intense air power competitiveness?
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