To work armed security in Florida, security officers must complete the Florida Statewide Firearms License Course. The Florida Statewide Firearms "G" License is the gun class that will certify security guards with the required 28 hours of training to apply for the Florida Armed Security Gun License.
http://invictussecurity.com/armed-security-state-wide-firearms-class-g-gun-license
http://invictussecurity.com/training/palm-beach-florida-security-guard-class-d-license-school