If I recall correctly (increasingly doubtful with age...), I went for my Southern Pacific RR physical, to the "Santa Fe" hospital, located in east LA......

And. I passed with flying colors, which failed to detect the most common type of minor pattern differentiated color blindness (and because I never had any trouble with your basic red, green, and yellow signal colors, on which I was actually tested by SP's incredibly geriatric doctor...), which was not discovered until my Army physical.

Today this would probably disqualify me from engine service, despite my lousy total of 60 dummies in 17 years of service, which I got, actually not for any accident or safety infraction, but for insubordination, when I told Henry M. Chigi to GFHS......after he ordered me to take a train out of West Colton with no operating pressure maintaining.