Grand Theft Auto: San Andreas/Architectural Espionage

Drive to the building. Make sure fists are equipped. NO WEAPONS HERE. Talk to the lady. Go up a few floors and go into the first open door you see. Proceed over to the busted fan/generator/whatever and break it. A fire alarm will sound, everyone will be evacuated, and guards will be distracted. Go up a floor, take your photo. Now hell breaks loose. Grab an M4, or equally strong weapon, and kill every last pig in your way. There will be quite a lot here. After clearing the building, you will face many cops outside. Just get in a car, and get the hell out and to to the checkpoint.