Just curious, where did you get south Arizona out of the article?
The article stated that the drone was being flown at Fort Huachuca which is located in southern Arizona. As for the 125KM range, that is the data link range to the ground station. The drone lost that link and went rouge and ended up in Colorado.
The article was datelined from Huachuca in AZ. The launch could have been from Carson in CO. Since the article doesn’t state the launch, I’m guessing that it was operating out of Carson.
Fort Huachuca/Sierra Vista.
Down on the AZ/Mex border.