The U.S. Army Engineer Research and Development Center demonstrates Scalable Autonomous Modular Propulsion kits for coastal and riverine Operational Logistics, or SAMPOL, along the Yazoo River in Vicksburg, Miss., Sept. 3, 2025. The SAMPOL platform, is an autonomous, or self-driving, system designed to be mounted on a barge to allow the vessel to operate virtually unaided while assisting with military logistics and wet gap crossings. (U.S. Army Corps of Engineers photo by Khary Ratliff)