Greetings to all Splinter Cell fans

I have a question regarding CIA Headquarters mission in the first SP installment.

I need to capture Dougherty. He has a tendency to smoke a lot of cigarettes and its obvious that he will want to smoke while I am infiltrating.

Questions: Where is he? In the walkthrough that I watched he is standing in front of the "Smoking Area" door. But he isn't there in my playthrough. Only a patrolling guard.

Thank you all for your time and assistance
gogwitcher300

After you have infiltrated all the way into the office (past the geeks tinkering with a bunch of tech gear, past his office, past the cinema with another couple of spooks (discussing a broken projector, I think), down the last corridor) there is a fire door that leads to the outside where he is regularly taking a break to smoke cigarettes.

The trigger is when you approach his office: he'll leave. You have to navigate Fisher to the fire door.