U.S. Naval Forces Southern Command / U.S. Fourth Fleet (USNAVSO/FOURTHFLT) employs maritime forces in cooperative maritime security operations in order to maintain access, enhance interoperability, and build enduring partnerships that foster regional security in the USSOUTHCOM Area of Responsibility.
Commander, U.S. Naval Forces Southern Command/ U.S. FOURTH Fleet, PO BOX 280003 Jacksonville, Florida 32228-0003 904.270.4044
COMUSNAVSO/C4F - Phone Directory: (904) 270-4044
Battle Watch Captain:(904) 270-7216
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