The Pentagon is an area that should see massive cuts. Historic cuts. I say this as a military brat and as one who has beloved family in the military. The military should be much smaller and much more efficient. As technology has ramped up there are large areas to cut. So cut them.
But you know what should be much smaller still? That massive post military career works program called The Military Industrial Complex. For some reason there is the assumption that after the military military people should work for defense contractors.