During the past several decades, the fire service has experienced critical changes that have significantly altered the fireground. This has had a profound impact on the fire environment and our tactics and strategies. It has also led to an increase in occupational illness for firefighters, which has similarly impacted how we operate. Combining research with real-world operational and leadership experience, this class will offer best practices while discussing the interrelationship between fire dynamics and the increase in occupational illness. Firefighters will gain a greater understanding of the concerns of occupational exposure as well as learn the key fire dynamics concepts to maintain an aggressive and safe mindset for fire attack and search and rescue.