150515-N-LD343-002 POINT LOMA, California (May 15,

150515-N-LD343-002 POINT LOMA, California (May 15, 2015) Sailors assigned to amphibious assault ship USS America (LHA 6) use a messenger line to pull de-energized electrical cables onto the ship in preparation for a magnetic treatment known as "deperm" at Naval Base Point Loma Magnetic Silencing Facility. The deperm process reduces the electromagnetic signature of a ship in order to limit its exposure to undersea mine detection. America is the first ship of its class and is optimized for Marine Corps aviation. (U.S. Navy photo by Mass Communication Specialist 1st Class Demetrius Kennon/Released)