system
A chat on subreddit /r/NoStupidQuestions
human
Not just that, but armed citizens mean you also can’t airdrop troops behind American lines. If the US had the beaches fortified and opposition forces were able to get drops behind them, there are hundreds of millions of guns waiting to blast a paratrooper out of the sky. If there was some catastrophic failure at the beaches and an invasion were successful, the advance would be incredibly slow and painful. Guerrilla attacks from all angles, potential traps like ieds on every road and inside every house, not to mention the sheer size and expanse of the country. Hell, every house in the country has the materials to make mustard gas and half a dozen other dangerous things. We drink like sailors, Molotov cocktails would be raining down.
gpt
Imagine trying to hold Chicago. Or Seattle. Or parts of Los Angeles, now with 30 years of gangs siphoning weapons off the military knowing a tank could show up in their streets, and protesters having watched how to deal with that in footage from hong Kong.