Firefighters are required to play close attention to fire behavior and have safety zones readily available in case of unexpected fire behavior. However, safety zone location and size are often a matter of anecdotal evidence, personal experience, and untested models. This is particularly troublesome for younger firefighters that might not have sufficient experience to make adequate judgments. This project will enable scientists to obtain measurements of energy transfer as naturally burning fires burn into and around clearings that may be characterized as firefighter safety zones. Results will provide improved tools to enhance the knowledge of experienced firefighters, train younger firefighters, and develop recommendations and specific guidelines regarding effective safety zones.