Brittaney Luther and her son, Andrew Shelter, ride a slide at the Loyalhanna Lake Dam Site playground during National Public Lands Day in Saltsburg, Pennsylvania, Sept. 23, 2023. The Pittsburgh District celebrates National Public Lands Day each year by inviting the community to help clean up and complete improvement projects at its various reservoirs. (U.S. Army Corps of Engineers Pittsburgh District photo by Frank J. Strumila)