[Butch Cassidy Slept Here]

And thanks for, not so artfully, avoiding the question. Spoken like a true airline shill! Now that I think about it, maybe you should have let Silent Bob ghost write your answer for you.

I forgot to mention that the switches, along Amtrak's "Northeast Corridor" line, are equipped with gas (either propane or natural) jets to ensure continued operation in freezing weather. This is, obviously, an item airline shills, like yourself, want to keep quiet.

Said gas jets may be absent on other Amtrak lines.