0 an official person dressed in ordinary clothes, who carries a gun on an aircraft and whose job is to protect other passengers -- 空中便衣警察
The decision to deploy a sky marshal, or put any other security measure in place, is not taken lightly.
If a passenger does not wish to travel on a plane with a sky marshal, would he lose the fare for that flight or would other flights be made available?
The door to the flightdeck had not been adapted to completely block access from the outside, and there was no sky marshal on board.
Another aspect that caught our particular attention is the so-called sky marshals.
Of course the sky marshals will be highly trained.
However, my specific concern is whether the sky marshals will be armed.
We need to consider whether sky marshals should be on aircraft.
The measures—such as sky marshals or increased security—that we deploy will vary from time to time and from place to place.
