I spent two decades on active duty in the Navy.
Our taxpayers have been paying the defense bills for a large portion of the planet for 70 years. Check the defense budgets for Germany, Japan, Italy, etc. and compare to what we spend. Then look at how much those countries spend on social welfare programs. Americans are in effect paying for socialized medicine and early retirements in wealthy countries.
We have submarines with nuclear warheads positioned all over this planet at all times. We have carriers - each with a hundred or so planes -- capable of reaching anywhere in the world in a matter of days (if not hours). We can mobilize special forces units for rapid deployment on demand.
You're the one who appears ill-nformed, Liz.