Echo Dynamics is a public artwork and water feature designed by Mikyoung Kim and manufactured with Zahner fabrication. The artwork is in front of the Federal Courthouse for the Eastern District of Arkansas and the United States District Court. Mikyoung Kim Design introduced a concept which would provide a unique aesthetic to the building's entrance, while also solving a security concern for the building. The artwork is both a fountain and a planter which protects the building using passive security from the street face of the park. Zahner worked with Mikyoung Kim to develop the concept as a stainless steel fountain, providing coordination with structural engineer, fountain consultant and mechanical contractor.