I almost called out the H-60 exhaust gas preservation and recirculation system, but it actually seems there is a variant that has its exhaust pointed up like that. Weird, but neat.

The pixels.

I’d say the second to leftmost guys left hand is on his gun weird. All of them look like they are holding their guns weird, but I don’t know, maybe it’s correct. That guy doesn’t seem to be doing it in an anatomical way. There’s a few other things, but that guy seems weird to me. They frequently pixel these things up to cover up that is like things, but somethings may be pixeled up for artistic reasons.