  a sky marshal (also known as air marshal or flight marshal) is an undercover law enforcement or counter terrorist agent on board a commercial aircraft to counter aircraft hijackings. sky marshals may be provided by airlines such as el al (who provide sky marshals on every flight), or by government agencies such as the austrian einsatzkommando cobra, royal canadian mounted police, german federal police, national security guard in india, metropolitan police so18 (aviation security operational command unit) or us federal air marshal service. ==history== ===australia=== in response to the september 11 incidents, the commonwealth instituted an air security officer (aso) program under the australian federal police in december 2001. these officers are generally referred to in the media as sky marshals. the aso programme provides a discreet anti-hijacking capability for australian civil aviation by providing armed security personnel on board aircraft. this involves both random and intelligence-led placement of armed asos on flights operated by australian registered air carriers, on both domestic and international flights. officers are armed and trained and equipped for a variety of situations on both domestic and international flights. ===austria=== in austria, armed air marshals are provided since 1981 by the einsatzkommando cobra. ===canada=== the canadian air carrier protection/protective program (cacpp) began on september 17, 2002 when a memorandum of understanding was signed between the royal canadian mounted police with transport canada, the authority responsible for canadian aviation security, and the canadian air transport security authority (catsa), for the implementation and ad
Counter-terrorism Law_enforcement_occupations National_security Sky_marshals