The original had a great deal of validity. Look at operations in Afghanistan. The Soviets did allot of recon, checkpoints and random searches in rural areas trying to mop up the resistance. Same thing in Red Dawn. The "wolverines" were facing these units, not a massive spearhead. Supposedly they had overrun the more populated areas already in the movie. Without nukes, our military could not handle a war of attrition with the Soviets over a long period of time.....atleast according to the Soviets and most realistic assessments. What the Soviets could never handle and their math always showed this was a war of attrition against rednecks.
I own firearms not to fight against my government, but to ensure I will not have to.