We went to the left of the main building at the front of to and climbed up the stacks to the large billboard.
If you remain undetected, you'll be paid more. You'll also have an optional objective to remain undetected. He'll tell you to go to the parking lot 40 meters away. Get in the car with him and he'll explain what kind of help he needs. When you arrive, go talk to Ted Fox, who is in the blue vehicle at the yellow objective marker.
