Lt. Col. Robert W. Green, U.S. Army Corps of Engineers Nashville District commander, presents a coin for excellence to Brad Marshall, lock operator at Kentucky Lock in Grand Rivers, Kentucky, for his work on a device to hoist heavy ropes inside of the lock chamber that earned him a USACE Innovation Award. The commander recognized him Jan. 23, 2024, in front of employees at the district headquarters in Nashville, Tennessee. (USACE Photo by Leon Roberts)