1) Agent who counters hijackers 2) Airline safety official 3) Airline-safety figure 4) Law enforcement occupation
Found on
https://www.crosswordclues.com/clue/sky-marshal
==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 av...
Found on
http://en.wikipedia.org/wiki/Sky_marshal
A sky marshal is a plain-clothed armed guard placed on an aircraft to defend against hijackers. Sky marshals first originated in the USA and were quickly adopted by the Israeli airline El Al. Typically a sky marshal is armed with a low-velocity semi-automatic pistol which will not puncture the aeroplane's fuselage when discharged.
Found on
http://www.probertencyclopaedia.com/browse/CXS.HTM
No exact match found.
