Who’s hitting whom?

A man in a grey suit stands before a large, circular vault door, holding a pistol in his right hand and pressing his left hand against the door, while another man in a dark jacket aims a submachine gun at the vault door from the right side of the frame; the scene alternates with a view from behind the man in the suit, showing him facing the armed man in the dark jacket who stands in a hallway, holding a pistol.