Hi Joannie: I agree - students like to hear from real folks who come from the field they're training for. Since you have an evening class, you may have a slight advantage in that the regular day is completed for your selected guest. Also, busy supervisors, managers, and department heads are often working late hours trying to catch up with their daily work. But an occasional field trip might be a nice break for 30, 45 or 6o minutes. They also have the ability to assign a tour to one of the shift workers, if that's applicable. Good luck! Regards, Barry