BCL
Engineer
I've been through SMF (Sacramento) and OGG (Kahului, Maui). I looked it up, and Newark gets EWR because the US Navy reserves the codes starting with N, although some older airports got those before that.I know two of those.MCOI tend to spell out city names rather than the acronyms because it is easier for ME. I don't have to look them up that way. . Those who don't like station codes should be thankful this isn't an airline forum. It's one thing to know SPK is the station code for Spokane, for instance; but how in the world unless you live there or fly in and out of Spokane International Airport would you know its code is GEG???? Fortunately Amtrak's codes are so much easier to decipher.
SMF
OGG
EWR
I've actually traveled via a couple of them.
Amtrak doesn't really duplicate any of these except for EWR.
I still don't quite understand SMF though.