About 90 minutes of war porn followed by ten minutes of you and everyone else in the theater crying (you know within about 3 minutes of the movie starting that it ends with a funeral). Chinooks dropping swiftboats into a river? Check. Dead terrorists? Check. Miniguns shooting live ammunition instead of using special effects? Check.
If that’s not enough to get you there, go read this article about how some of the scenes were directed. Basically, the director told the SEALs “This is what your objective is” and then the guys came up with operational plans. They then filmed based on the actual plan, not what some writer thought would be a good plan.
My only gripe is that they had several first-person shooter views where the shooter had an M4 with an EOTech up top, but the EOTech reticle was never seen.