Between streamlining the military (think about how much simplier things would be there if profit wasn't involved), and working an integrated unification of both the information aspects, and the means of physical delivery, of health care. Especially in health care.
Just in rationalizing, and finally standardizing, the information flow of patient data, procedures data, procedure charges, and the cross checking of plan coverage against procedure appropriateness, in relation to diagnosis, would involve what I have to believe would be unbelievable savings; and I say that after having had about six years experience in developing, and supporting, the data collection, and distribution system for a fair sized, regional remote billing organization (Health Services Northwest, an on again, off again, partnership between the Providence, and Swedish, hospital groups).
All of you out there ought to be giving an employee buyout of America some very serious though.
Looking at the list of expenditures, it is clear why some say the U.S. is a giant insurance company with an army. Half of all spending goes for Social Security benefits and health programs such as Medicare and Medicaid, while another 20% is for defense and military benefits.