I will urge you not to disrupt their services, and not film unless you are given permission. If you want to do it correctly I would even go so far as to inform if they are interested in participating in your discussion beforehand. I am not a huge fan of bursting in and fire questions when the person interviewed hasn't had the chance to prepare.
Best regards,
Leo van Miert
Horsepower is how hard you hit the wall --Torque is how far you take the wall with you
Leo van Miert
Horsepower is how hard you hit the wall --Torque is how far you take the wall with you