CN Med check
Had good friend lose a job contract with domestic carrier in China because he has a metal knee joint. They view him as being disabled and don't want him driving.
I work out with this guy. We jog, shoot hoops, play handball, ski, swim, bike, and after a few beers we chase the local skirts for shag or two. Fun guy, very active. But far from being disabled.
Recruiter told him the CN doc's just don't know what to do when they come accross different, so they "cull em out".