Two core references for DoD going forward, both from the Defense Science Board (DSB).
Phi Beta Iota: Defense can drop to $300 billion a year without any major issues. All it takes is integrity across the board. Military retirement–as with CIA and FBI and Secret Service retirement–is long over-due for severe change. In the military only 4% of the force suffers 80% of the casualties, and that is the only part of the force that merits early retirement while also correcting the criminal neglect of ill and disabled veterans that continues today. It merits observation that in the absence of a population strategy and policy, no retirement program can be said to have a strong foundation.