The ocean minesweeper USS IMPERVIOUS (MSO-449) is moved to the pier by the large harbor tug SANTAQUIN (YTB-824), center, and a civilian tug after being unloaded from the Dutch heavy lift SUPER SERVANT 4. SUPER SERVANT 4 carried the ADROIT and two other ocean minesweepers, the USS IMPERVIOUS (MSO-449) and USS LEADER (MSO-490), to Norfolk from the Persian Gulf region, where the minesweepers were deployed for 14 months in support of Operation Desert Shield and Operation Desert Storm