Since the introduction of the fog/combination fire nozzle by Dr. Oyston Charles in the 1960s, the discussion between the traditional smoothbore nozzle and the fog nozzle/combined fire attack was continuous and sometimes lit. My research has informed me that the debate between the smooth bore nozzle and the misting nozzle has always and will continue to be openly controversial, particularly over the past two decades as firefighters have taken an ever-deeper interest in firefighter safety and accident prevention. To date, my thesis is as follows: The advantages of the smooth bore nozzle make it a safer and more effective nozzle for direct fire attack than the fog or combination nozzle. This report will examine two sources that contain perspectives contrary to the above thesis. Since the early 1980s Grimwood (2000) has been studying and implementing the use of water mist directly into firefighting gas layers from a fog nozzle, also called (3-D) water fog, developed by the Swedish fire brigade . Grimwood reviews studies and tests conducted by the US Navy. Compared to a direct flow attack using a smoothbore nozzle, three significant observations were recorded: time spent fighting the fire was reduced, firefighters' working heart rates were reduced, and firefighters' maximum body temperatures were reduced. firefighters were lowered, while implementing the (3-D) water fog technique from a fog nozzle. The author indicates that in the last 10-20 years line-of-duty deaths (LODDs) due to flashover, or ignition of fire gases, in the United States, have increased, while in Sweden there has been a decrease in LODDs due to The use of fog nozzles was adopted during this same period. Grimwood evaluates different specs......middle of paper......the job of a firefighter is not very different from that of a mechanic, both are called upon to repair a broken situation. Like a mechanic, a firefighter has a large assortment of tools in their toolbox, some tools are better suited to particular situations than others, without these tools both professions would be ineffective in carrying out their duties. The smoothbore nozzle and the fog/combination nozzle are two of the most common types of nozzles that a firefighter has in his toolbox. Although the fogging/combination nozzle is a popular tool for septic tasks, the advantages of the smoothbore nozzle make it a safer and more effective nozzle for direct fire attack than the fogging or combination nozzle. I hope to prove my point through ongoing research and reporting using the sources and articles, like the ones above, that have been written about this long-standing debate.