Researchers from the U.S. Army Engineer Research and Development Center (ERDC), the U.S. Army Corps of Engineers and the U.S. Geological Survey worked together to service a prototype underwater acoustic deterrent system (uADS) at Lock No. 19 in Keokuk, Iowa, April 2023. The uADS, is being lifted from the channel for the ERDC-led team to begin the servicing project. (U.S. Army Corps of Engineers photo by Christa Woodley)