My problem with is what was so great about the original to a kid growing up in the 80s. The original story had a group of kids who became self taught guerillas with absolutely no experience at all. It was one of those teenage fantasies that said "You can be a bad ass and kill the Russian invaders too!"
But this one starts off wrong already. Jed is a combat vet who just returned from Afganistan, so right off the bat, this goes from "Bunch of high school kids who learn to kick ass" to "A combat vet who teaches his friends how to shoot bad guys".
That one thing diminishes it for me. In the original, Jed was a natural leader, and had just as much knowledge and experience as the rest of the group, but now he's a professional soldier with actual combat experience :/
That's not going to stop me from going to see it, of course, but still, just something to think about.