Keywords: US Navy 110520-N-NC292-101 The Los Angeles-class attack submarine USS Helena (SSN 725) departs Portsmouth Naval Shipyard after completion of extend.jpg en PORTSMOUTH N H May 20 2011 The Los Angeles-class attack submarine USS Helena SSN 725 departs Portsmouth Naval Shipyard after completion of extended maintenance U S Navy photo by James Cleveland/Released 2011-05-20 110520-N-NC292-101 Navy http //www navy mil/view_image asp id 101302 U S Navy photo by James Cleveland PD-USGov-Military-Navy USS Helena SSN-725 |