We need to privatize the military?

Tea party folks say that we need to eliminate or privatize social security and medicare because they are not self-supporting and their costs are escalating due to improved technology that is outpacing income. In addition, the constitution talks about "general welfare" but it is not explicit that means physical welfare of individuals. The military is also not self-supporting and has rising costs due to technology. The constitution talks about defense, but does not say anything about having a military larger than all our foes and allies put together. As the tea partiers are always reminding us how THEIR views are based on principles, I assume we'll hear a call for downsizing the military 90% soon.