If I am driving or entering a building/area other than my house I am always looking for exits. If I am sitting in one of these places I always have my back to a wall and as such can see the entrances/exits.
Run, Hide or Fight – For me that depends: Is it better to immediately fight? Is/are the shooter(s) between me and an exit? Are there others with me?
Keep your hands empty and in sight: That is so not happening! If I am triggered into Run/Hide/Fight the first action is to pull my concealed carry.
Run in a zig-zag pattern? Give me a break! Just run!