Upon additional (extremely) limited investigation, this location seems like a good place to test cruise missile launches against Mecca and Medina (and Qom).
Indeed.
When I was stationed at WSMR as a US Army Captain I became good friends with the CO of the USS Desert Ship, a Navy Captain billet.
I took great joy at the reaction I’d get when calling his office and saying “this is Captain ______ calling for Captain______”
The Navy tests shipborne missiles and systems such as radars at the range, among other things.