The NSO is an optical telescope site. I suspect it has nothing to do with the observatory, but everything to do with the mountaintop it is on.
Probably installing some sensors that someone else needs.
I would not get too excited about it.
I had friends who lived in/near Cloudcroft, near the site.
Beautiful place.
The NSO: https://www.nso.edu/
(it is in close to White Sands Missile Range.)
Have been there three or four times. Also nearby is the Apache Peak observatory. The Roswell crash site was 80 miles northwest of Roswell. Nearby is the County seat for Lincoln county, Billy the Kid country, it is in Carrzozo, which is about forty some miles due east of the Trinity site. Also a massive shield Volcanic area called “Valley of the Fires” is close by too. Lots going on in that area. The Corona area also received fallout from the first Atom bomb test.