The fire service has adapted to and enhanced its understanding of fire dynamics expected in tall buildings. Depending on occupancy, fire dynamics will be quite different based on fuel load, compartment size, and internal and external environmental factors. Spaces in tall buildings range from businesses with large open spaces, some presenting a labyrinth of partitioned rooms and halls, to residential housing and hotels that are more compartmentalized. Tactical decision making must be based on the presenting fire dynamics to ensure effective, safe, and appropriate strategies and tactics are implemented from a command perspective and task-based level. This class is being presented by two experienced firefighters from fire departments in New York and Australia, proving that fire dynamics are the same everywhere. This is an international approach to a truly international problem.