iirc, GSM by Nomad is at least the 2nd or 3rd successor / different company derived from what once was GSM Vehicles in Plattsburgh, NY.
it's arguable that the greater part of the original GSM Vehicles' Airstream creativity and drive (and GSM's reputation for those qualities) was in the person of Colin Hyde. Colin left GSM and has been running Colin Hyde Trailer Restorations, his own very successful and independent Airstream repair and restoration business for a number of years by now.
at a guess, it looks like GSM by Nomad is the owner or partner of Nomad Airstream. it is good to see new Airstream dealerships open and become successful, and we wish them well as they develop and grow their own respective reputations.