Military campgrounds are our first choice as well.
Holloman AFB, Alamogordo, NM
For some reason I was expecting drones to be smaller.
As a special treat we got to hear a sonic boom from the HHSTT while we were there. There is a really good museum in town too.
https://www.nmspacemuseum.org
White Sands has a good one too. The museum was closed when we went but the outside park is worth the trip all by itself.
http://www.wsmr-history.org