Originally Posted by ams:
In the discussion on Reddit, the original poster's friend works for Amtrak and took the pictures - another individual in the thread posted an additional picture from his father, an Amtrak engineer. They've confirmed it's an Amtrak route.
Correct. It is an "Amtrak route", over the former D&RGW, then SP, and now Union Pacific. It is not however, "leased from the UP".