Yup... just zoomed in on the warning labels by the front step on 5239... "Warning! Remote Control Locomotive"
I'm guessing it has a manual override, as the beacons weren't flashing, and there was definitely a crew aboard the lead unit...
Also, I noticed 5240 is sub lettered SOU... And I dug that it was running long hood forward, the way God intended...
The horn was a tad anemic, though...
Lee