Alarm sounds, robotic voice repeats "intruder alert, Sector 12, intruder alert..."
Two security guys see the intruder and sprint after him. They are gaining ground when they suddenly halt.
The camera pulls back to reveal a line on the wall behind the two men dividing "Sector 12" and "Sector 13." One man says proudly into his walkie talkie, "Sector 12 clear."
The intruder, obviously, gets away.