That is very cool.
NASA and Airstream have quite a history. They used a motorhome for transportation, several trailers as a quarantine trailer along with support trailers.
Your photos look more like equipment or support vehicles as seating seems slim to none.
There is even a trailer in the Smithsonian that was with the space program.
Quite a bit of info on Google "NASA and Airstreams.
What a great find, now how to preserve that fading sticker/decal.