The overwhelming majority of the time, "arrests" on airplanes are made by regular passengers and the flight attendants, who beat up the offender then hogtie him with duct tape. Air marshals are completely pointless.
Air marshals may be pointless, but not for this reason.
Air marshals are almost certainly trained not to intervene in minor disturbances. Otherwise a team of hijackers could locate the air marshal by having one person act as an unruly passenger.
> Otherwise a team of hijackers could locate the air marshal by having one person act as an unruly passenger.
For the last twenty years, hijackers (in flights originating from US) are probably always presumed to be suicidal and much less likely to succeed in a hijacking. To the point where I'd assume that they're rarely even attempted.
Perhaps we could end up needing air marshals in the future, a future where many passengers are not old enough to recall or be affected by the terrorist attacks on September 11.
Conversely, as a hijacker, you'd be taking a huge gamble to try and select the one flight where there were no air marshals.
A lot of times, I feel like this whole concept was based on an inherit deterrent and seems to have worked, in conjunction with increased airport screening:
"The number of hijackings has dwindled in recent years. About 50 have been reported since Sept, 11, 2001, and none in the U.S., according to the Aviation Safety Network."
Reinforced cabin doors and knowing that the terrorists want to kill everyone instead of taking hostages has changed the game. I'm not privy to what influences terrorists but it seems like they can no longer commandeer airplanes
If you're going to be hijacking to use the plane as a weapon you aren't going to be worried about the 1 in 10 chance of an air marshall trying to stop you, any more than the near certain attempt of the other 200 people on the plane trying to stop you. There just aren't legions of people out there willing to kill massive amounts of people in this fashion.
The number of bear attacks in Springfield went to zero in 1996 when Homer started Bear Patrol. It's a case of life imitating art.
Air marshals are almost certainly trained not to intervene in minor disturbances. Otherwise a team of hijackers could locate the air marshal by having one person act as an unruly passenger.