At 12 noon, January 8, Guam Time, the USS SAN FRANCISCO hits an unchartered undersea mountain while travelling at high speed about 500 ft below surface. The submarine is able to surface and head back to Guam. One critically injured sailor died January 9, while 23 other crewmen are treated for injuries by SEAL medical personnel that came aboard January 9. On its way back to Guam, the SAN FRANCISCO is escorted by USNS GYSGT FRED W. STOCKHAM (T-AK 3017) and USCGC GALVESTON ISLAND (WPB 1349). USNS KISKA (T-AE 35) as well as military aircraft stood by to assist if required.