Priority security = random selection ?
 

Can I know when I get priority security is mean the random selection, when I went from YEG and YYC and they all chose me and when I ask why they choose me they just said random selection? does anyone have this situation before? When they random selection me sounds like the reason is I got priority security...

I believe you're asking whether there is a connection between using priority security and being randomly selected for enhanced security screening. Is that the question?

If so, then no, I am not aware of any connection. I don't know if the selection process is, indeed, perfectly random, but I'm sure there's no distinct connection between priority security and random selection.