These entities are guzzlers of federal dollars, yet, they continually are in the red and are not effectively managed. Sell them off to the private sector. Let's have a better, more reliable public transportation system (like European trains) and therefore get more people riding them and off the road (thereby saving gas, reducing pollution, etc.)
Most disciplines are similar/common to all services (finance, communications, etc...) yet the services each maintain their own schools to train their people. Consolidate these functions under the National Defense University and create a single DoD educational asset. Closing down redundant schools would save countless dollars and allow larger consolidated facilities to realize the economic savings of scale.