I think half the problem is there's such few people in charge of such a biblical amount of money. No one can comprehend the figures involved.
There's a open statistics website and I tried a couple of queries on it and the sums of cash spent on what seems to be unneeded vague "area's" was unreal.
I think half the problem is when they outsource ANYTHING to private companies on contracts they just get ripped right off. The only involvement I've had was to sell power supplies for radios to a local military unit. They made a mistake on the paper work and paid us 10x too much for each unit shipped and thought that price was OK as another company put in a higher bid!!... :bang: 1000% profit margin FTW!