171106-N-TP832-021 JACKSONVILLE, Fla. (Nov. 6, 2017) Keynote speaker, Rear Adm. Sean Buck, commander of U.S. Naval Forces Southern Command/U.S. 4th Fleet, delivers remarks during the Jacksonville Chamber of Commerce's 15th Annual Military Appreciation Luncheon. Buck thanked the leaders and citizens of Jacksonville for their steadfast support of the local community and service members who call Jacksonville home. (U.S. Navy photo by Mass Communication Specialist 3rd Class Michael Lopez/Released)