Federal Air Marshal Miami Field Office Seal Plaque
In 1963, President Jhn F. Kennedy originally created the program. The office is under the US Federal Law Enforcement agency with the supervision of TSA - Transportation Security Administration of the DHS - US Department of Homeland Security. The service is to promote confidence in civil aviation to detect, deter and defeat hostile acts targeting the nation.
Government Seals here - more details at Military Plaques' main store page