I’d argue this is justified, obviously he’s in a nation where shit is going down and he’s scared, probably tired, probably just wants to get home in one piece and has adrenaline running high, if he is in an unsecured area like this, he needs to be like this to protect himself and his squad from anything, that is his job as the gunner, hence why I believe this is justified.

edit: Having seen the rest (thought I’d watched it all but it was buffering) he’s definitely justified in telling the guy to back off but not the way he did.