A few people?
We have the ability to arm every man woman an child in this country an are trained in gorilla warfare by our teens. Airsoft, lazertag, hunting, Americas Army(training game)
Just look at our current war. We took over a country in a matter of days with almost no loss of life on our side. The "few people with pop guns" we are still fighting years later at a cost of thousands of lives. True military power is in the people, not the standing army.
Get real and stop listening to the propaganda. No-one intends to invade No-one. it's a myth.. If you have an enemy, it's already within. If an enemy of any kind did want to do a proper job, the check shirts and blue jeans brigade would be wiped out in an instant. You're kidding yourself.
What is the current war? I hope you don't mean the mess that's been made in Afghanistan. After all the loss of life and monetary cost, there's no pipeline, no prospect of there ever being a pipeline, the Northern Alliance is no better than the Taliban and the West is in retreat. The only winners are the arms businesses, the supply and construction businesses and the banks. Perhaps Karzai and his cronies have lined their pockets at your expense too. Better to spend the money on health care at home. eh?