In this episode of The S-Files, we are exploring the service done by AmeriCorps member Callie Grones, who is serving her second term with Marshfield Clinic Health System (MCHS) Community Corps at Friends of the Lake Superior Reserve in Superior. Callie discusses several different service activities she has done with people who are stewarding and protecting the St. Louis River estuary, which is where the river that serves as the border between northwestern Wisconsin and northeastern Minnesota empties into Lake Superior and creates a place filled with biodiversity. She describes events to educate and mobilize the public that she has helped coordinate or participated in during her service, including school field trips to the estuary, their birding series, tree planting, and beach cleanups. Callie also describes learning how to take water quality samples and helping to collect them by taking a boat to their sampling sites, with the data being used to track the quality of the water on a day-to-day and long-term basis. Listen to learn how Callie came to her service position at the Friends of the Lake Superior Reserve looking for an opportunity after graduating college to expand her skills and make a difference in the outdoors and how everything she has been learning is opening up different pathways for continuing her education following her service.