In this section, contents regarding the Crown Water Spray Equipment for Forest Fires Protection (CWSEFFP) are presented, intended to expand the water screening capacity of sprinklers on houses adjacent to forests as presented in FireSmart and FireWise to more aggressively suppress wide-area fire spread and protect WUI communities from forest fires. Here, through indoor experiments to prevent the spread of surface fire flames, the sprinkling rate per unit area necessary to extinguish or prevent the spread of flames from pine coniferous forest surface fuels has been shown to be at least 100 mL.m2. The required minimum watering amount to prevent the spread of forest fires can vary significantly depending on various circumstances, such as forest fire intensity and weather conditions. In fact, the owner of a house that survived the 2017 Kansas wildfire said that he turned on the sprinklers before evacuating, and when he returned, his house and cows were alive. (https://weather.com/news/news/kansas-wildfire-home-spared).