Nobody has the straight story. But there are a bunch of pieces of stories floating around that anybody can make into just about any story they want.
By the mid-80s 5th Group was spending a bunch of time at Ft Bliss. Even had 5th Group Forward there. 5th Gp (FWD) had all the modified vehicles and were the base instructors when the battalions rotated through for their yearly training.
The world on the street was "We were going". In our off time we were cruising around town checking the neighborhoods, homes, prices, etc.
A few problems with Bliss were ranges. TRADOC covered most of Bliss and the rocket guys had White Sands. Any of the long range vehicle movements took a ton of coordination.
5th Group was working with aviation but mostly stuff like CH-47s, heavy lift, long range. Little birds were fun to play with but hard to sling a jeep under them.
Then BANG, one day, It's not Bliss it's Campbell and 3rd Battalion is staying at Bragg to become 1st of the 3rd.
Only the Army can do stuff like that.
Pete