I don't know the specifics of the process for selection, but I can confidently say that the process is bigoted.
I mean TSA, but it also applies to other groups too.
(obstinately or unreasonably attached to a belief, opinion, or faction, in particular prejudiced against or antagonistic towards a person or people on the basis of their membership of a particular group)
The Rehat Maryada would suggest that is in no way whatsoever an unreasonable suspicion.
Sure, your manager likely didn't carry one on airplanes .. but that still falls short of being an unreasonable check.
It's not a great analogy, but the same applies to registered concealed carry gun owners. They're not the people who shoot people.
Still screened and detained 100 percent of the time, sometimes for hours, sometimes having to surrender personal devices, decades later.
The message is very clear.
What were you hoping to achieve by sending that report?
Most people would have just thought "wow, lucky I wasn't caught with that", taken it out of the bag so it didn't happen again and carried on with their lives.
Deviating from that normal response makes it look like you're just trying to cause trouble.
As I wrote in a very different thread, I avoid putting anything in baggage that I might carryon that is even marginally prohibited. I used to do a lot more travel and it's inevitable that knives and the like would inevitable get left in a pocket.
Officer: Look at this knife. You're trying to take this on the plane?
Me: Holy shit I didn't realize that was in my bag.
Officer: Well do you want it back? Or do you want to fly today?
Me: I don't want it.
Officer: Don't mind if I keep it?
Me: It's all yours.
It was a $13 knife, but he liked it.
No doubt that was a security violation, but it's all security theatre.
Now, knives could only be used to commit a crime i.e. assaulting another passenger or crew. Banning liquids does more to prevent terrorists than banning knives. I can see banning them for the same reason concerts ban them, that it is a lot of people in a small space, but that is very different than “national security” or “preventing terrorism”.
> Isn’t that what the scanners are for?
Err, not that I know of, I generally use the OED to look up the various recorded uses of words.
> To find large metallic objects?
The OED is for finding words, "scanners" that I've used or made are for mapping background geological structures via seismic waves, gravitational waves, magnetic waves, gamma waves. Medical scanners I've worked with have generally not bee used for finding large metallic objects and some should not be used if a patient has large metal objects attached or within.
> Why do you need additional “random” screenings behind that?
In 40+ years of scanning things there's not been a single time I've needed an additioan "random" scan - a few times scans have been repeated due to various failures to save data.
> Or are you saying the scanners don’t work to find even obvious weapons?
In the comment you responded to I said that it is not unreasonable to think that a Sikh you meet, anywhere, might be carrying a knife, a comb, a bracelet, etc. I did not mention anything about scanners. No, seriously, go and recheck the comment.
> If so, we should get rid of the scanners.
We? All scanners? Okay, well, thanks for sharing that opinion.
I figure various groups of scanner users will want to keep using them, of course. I personally am in favour of scanners for exploration and medical work.