The port has always taken security seriously ; after the September 11 attacks , thwarting terrorism became the focus . Security guards are on constant patrol , supported by the '' Seaport Security Unit '' , made up of 11 officers and 2 sergeants on contract from the Jacksonville Sheriff 's Office . Department of Homeland Security also has a presence with United States Customs Service and United States Border Patrol agents . The port has three areas of activity : cargo , cruises and ferry service
September 11 attacks
September 11 attacks
Port of Jacksonville