So I'm watching Tenet, for the third time and I'm still confused. Firstly, the first scene at the freeport, why does the inverted protagonist try to shoot the protagonist during the confrontation between the 2? Second, when Kenneth Brananagh brings his wife to the Freeport before the heist, she looks at a man in a car wearing a mask needed for the inverted timeline, who is this man? Is it inverted brannagh?

If you havent watched it yet, apologies for spoilers, also, watched it stoned or drunk