Wildland-Urban Interface by the Numbers (IMAGE) USDA Forest Service - Northern Research Station Caption A new USDA Forest Service map book summarizes the extent of the nation's wildland-urban interface (WUI) nationally and by state. Credit USDA Forest Service Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.