This file photo shows a Falcon 9 first stage being transported by truck after landing. There is some equipment at the end of the truck, which includes dials, knobs, and an exhaust stack, which suggests there may be a diesel generator, although it may just be a compressor for the hydraulics to its immediate right.
In fact, the big box
may not necessarily be connected to the rocket is not related to the rocket at all, but it made me question if the rocket does have a need for any connected support equipment for the trip.
Question: What kinds of support equipment are necessary or at least important to transport the booster by truck? Are there chemicals, materials, or components that need to be kept cool for safety reasons, or things that need to be pressurized, or servos, valves, or actuators that need to be active?
below: Cropped screenshot from the YouTube video SpaceX - Booster Number 4 - Thaicom 8 06-06-2016. (@Hobbes linked to this discussion where I found this video.)
below: Image from the New York Times article Recycled Rockets Could Drop Costs, Speed Space Travel.
The recovered booster stage of a SpaceX Falcon 9 rocket that landed on a floating platform in May. Credit Loren Elliott for The New York Times