Science has validated the existence of several kinds of natural phenomena that are characterized by unusual aerial lighting displays. Some of these phenomena are note clearly understood and have been only recently documented. Additionally reliable observations from US government and official international sources include descriptions of airborne objects with uncommon characteristics. Some of these phenomena have electrical properties that can adversely effect safe aviation and appear to be very unsusual to observers. Some of these phenomena represent a physical hazard that is documented in several US Governmenet operated aviation incident-reporting systems. These poorly understood phenomena have not been giver appropriate consideration for the potential hazards they may represent by the US aviation system. Read more (Narcap Report by Ted Roe, published in 2002).