SIMA San Diego Sailors are presently assigned on temporary additional duty in the Consolidated Planning Organization, SUPSHIPS San Diego and at the Southwest Regional Calibration Center (SW-RCC) located at the Naval Aviation Depot (NADEP), Naval Air Station, North Island, California. A ribbon-cutting for the newest addition, the SIMA Submarine Maintenance Division, was held on 5 April 1999 at Naval Base (Submarine Base) Point Loma. Defense Distribution Depot San Diego, California (DDDC), located on Naval Station San Diego, is one of the most mechanized depots in DLA. DDDC performs routine and high priority distribution operations to include receipt, store, and issue, with related functions to include transshipment, preservation, packaging, packing, stock readiness inspections, marking and reclassification. Items processed at the depot include depot level repairables.