sentences:  Shorter structures that are located close to airports may also require lighting; an example of such is the south scoreboard at Lambeau Field in Green Bay, Wisconsin built in 2013, which is the tallest structure in the general area of nearby Austin Straubel International Airport.The International Civil Aviation Organization (ICAO) sets standards, usually adopted worldwide, for the performance and characteristics of aviation warning lamps.Lights are usually arranged in clusters of two or more around the structure at specific heights on the tower.