FAMS meaning in Governmental ?

The Federal Air Marshal Service (FAMS) is a United States federal law enforcement agency under the supervision of the Transportation Security Administration (TSA) of the United States Department of Homeland Security (DHS).

Because of the nature of their occupation, federal air marshals (FAMs) travel often. They must also train to be highly proficient marksmen. A FAM's job is to blend in with other passengers on board aircraft and rely heavily on their training, including investigative techniques, criminal terrorist behavior recognition, firearms proficiency, aircraft-specific tactics, and close quarters self-defense measures to protect the flying public.