I caught the eastbound California Zephyr that's due into Chicago later today at Agency, Iowa with the Horizon dinette CDTX 53509 Pacific Horizon as the first car. This Horizon is usually on a single-level set of the San Joaquins.
Looks like there was an Amtrak Horizon cafe substituting for the Pacific Horizon while it was gone. I caught Amtrak #6(29) today heading east through Agency, Iowa with AMTK 53511 as the first car. The second unit was a bit smoky too.