U.S. Navy Petty Officer 1st Class Tim Darnell wades through lily pads. U.S. Navy Petty Officer 1st Class Tim Darnell wades through lily pads in the manmade artificial wetland at the Veterans Memorial and Nature Center in Covington, Tenn., on Aug. 18, 2006. Darnell was selected for promotion to chief petty officer. The U.S. Navy Chief Petty Officer's Association has been volunteering manpower annually to maintain the park for seven years. SHARE: Download: Full Size (0.11 MB) Credit: VIRIN: 145760-W-RSU46-226.jpg Photo Gallery