The Federal Air Marshal Service (FAMS) is a United States federal government law enforcement agency under the supervision of the Transportation Security Administration of the United States Department of Homeland Security. The Air Marshal service is meant to promote confidence in civil aviation by effectively deploying Federal Air Marshals (FAMs) to detect, deter, and defeat hostile acts targeting U.S. air carriers, airports, passengers, and crews. FAMs are law enforcement agents of the federal government.
Because of the nature of their occupation, Federal Air Marshals (FAMs) often operate independently without backup. As officers, they are required to maintain one of the highest standards for handgun accuracy. 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.
Air Marshals were originally designated as US Customs Security Officers assigned by order of President John F. Kennedy on an as-needed basis, and later were specially trained FAA personnel
Also contrary to the impression from the TSA Our Mission statement, the Customs Officers were phased out in 1971-1972. Many of them transferred to the FAA Civil Aviation Security Division to serve as Aviation Security Inspectors and also in the volunteer FAM program directed by the FAA's Civil Aviation Security Division.
Prior to September 11, 2001, the Federal Air Marshal Service consisted of varying numbers of FAMs depending upon the perceived threat and funding availability. Only 33 FAMs were active on 09/11/01. As a result of the 9/11 attacks, President George W. Bush ordered the rapid expansion of the Federal Air Marshal Service. Many new hires were agents from other federal agencies, such as the U.S. Customs Service, U.S. Border Patrol, U.S. Housing and Urban Development Office of the Inspector General (OIG), Drug Enforcement Administration, U.S. Postal Inspection Service, ATF, and many others
A classified number of applicants were hired, trained, and deployed on flights around the world. As of August, 2006, this number is estimated to be in the thousands. Currently, these FAMs serve as the primary law enforcement entity within the Transportation Security Administration (TSA).
On October 16, 2005 Homeland Security Secretary Michael Chertoff officially approved the transfer of the Federal Air Marshal Service from the Bureau of Immigration & Customs Enforcement (ICE) to TSA as part of a broader departmental reorganization to align functions consistent with the Department of Homeland Security (DHS) "Second Stage Review" findings for:
As part of this realignment, the Director of the Federal Air Marshal Service also became the Assistant Administrator for the TSA Office of Law Enforcement (OLE), which houses nearly all TSA law enforcement services.
Since July 2004, TSA has provided supplemental personnel to assist mass transit systems during major events, holidays, and anniversaries of prior attacks. These TSA personnel deploy as Visible Intermodal Prevention and Response Teams (VIPR teams), whose goal is to provide a random, unannounced, unpredictable, high-visibility presence in a mass transit or passenger rail environment. The level of assistance transit systems request depends on a transit system’s local political and security environment. A VIPR team may combine various types of TSA assets including federal air marshals. Beginning in July 2007, TSA significantly increased the number and frequency of VIPR deployments, from an average of one exercise per month to one or two exercises per week.
There were issues with federal air marshals and early VIPR deployments. TSA field officials said the initial exercises put their safety at risk. TSA required federal air marshals to wear raid jackets or shirts identifying them as air marshals, which potentially compromised their anonymity. In response to this concern, TSA changed the policy; federal air marshals now attend VIPR exercises in civilian clothes or jackets that simply identify them as DHS officials. Some transit security officials reported that federal air marshals were unfamiliar with local laws, local police procedures, the range of behavior encountered on public transportation, and the parameters of their authority as federal law enforcement officers.

The second phase trains the candidates for tasks that they will be expected to carry out in the field. This training places an emphasis on perfecting the marksmanship skills of the candidates; a necessity of the job due to the tight confines of an aircraft, as well as the number of bystanders. Candidates who successfully complete this training will be assigned to one of 21 field offices, where they will begin their missions.
Federal Air Marshals carry the SIG-Sauer P229R service pistol in a .357 SIG chambering.
As noted above, Air Marshals must be re-certified on their firearm quarterly. According to an anonymous Air Marshal, they are trained to "shoot to stop", typically firing at the largest part of the body (the chest) and then the head to "incapacitate the nervous system".
Under the service's original dress code policy, Air Marshals were required to conform to a strict dress code, well-shaved and with a conservative haircut. Federal Air Marshal Frank Terreri of the Federal Law Enforcement Officers Association (FLEOA) successfully sued senior executives of the Department of Homeland Security complaining that policies prevented Air Marshals from speaking out that current policies (such as their strict dress code, "Federal Air Marshal discount" mandatory grouping hotel policy, airport policies that force Air Marshals to walk up security checkpoint exit lanes, and priority aircraft pre-boarding before handicapped passengers and passengers flying with small children) make Marshals easy targets for any possible hijackers, making them stand out as the government agents concealing firearms, and thus eliminating their effectiveness. A policy change in August, 2006 allows Air Marshals to wear whatever clothing they want and stay at any hotel to protect their anonymity, but current Director Dana A. Brown continues to enforce the policies that mandate FAMs to both walk through security checkpoint exit lanes and pre-board aircraft in full view of general passengers in the terminal.
Ultimately, one of Asa Hutchinson's final decisions before resigning as head of DHS's Border and Transportation Security Directorate was the issuance of a memorandum determining that Air Marshals would not also be ICE Special Agents. In 2005, Homeland Security Secretary Michael Chertoff conducted a second-stage review of DHS' organization and ordered the FAMS to be moved from ICE and back to the TSA. The move to TSA was effective October 1, 2005
According to initial media reports of the incident, a fight broke out between Alpizar and his wife, after which Alpizar suddenly ran up the aisle from the back of the plane. Lonny Glover, national safety coordinator for the Association of Professional Flight Attendants, said: "As the man came forward it was obvious that he was upset ... That's when one of our attendants at the front of plane told him, 'Sir, you can't leave the plane.' His response, she said, was 'I have a bomb.' It was at that point that the air marshals gave up their cover and pursued him out the door and up the jet bridge."
On December 8, 2005, White House spokesman Scott McClellan said that the President was satisfied that air marshals acted appropriately in the Alpizar shooting.
On July 29, 2003, the FAMS Agency Executive Vice President for the Federal Law Enforcement Officers Association (FLEOA), FAM Robert MacLean, disclosed that the FAMS planned to remove air marshals from long haul flights in order to avoid the cost of an overnight hotel stay. The plan was ordered when TSA was faced with a budget shortfall and right after DHS issued a July 26, 2003 warning that terrorists were planning to smuggle weapons onboard aircraft leaving the U.S. East Coast, United Kingdom, Italy, and Australia with the intention of hijacking them. After Congressional outrage, the plan was cancelled before going into effect. This plan was at odds with the Aviation and Transportation Security Act (ATSA), whose Section 105 states that "Deployment of Federal Air Marshals... [on] nonstop, long distance flights, such as those targeted on September 11, 2001, should be a priority.
MacLean was fired for "Unauthorized Disclosure of Sensitive Security Information (SSI)" as a result of his whistleblower disclosure. He is challenging this charge in the U.S. Circuit Court of Appeals. He claims that his termination was a retaliatory act in violation of the Whistleblower Protection Act (WPA)and a spending ban in appropriations law, commonly known as the Anti-Gag Statute.