set where? Alamogordo, New Mexico??

So where does this film supposedly take place? I used to live in Alamogordo, New Mexico and it's quite a ways to White Sands, like 10 miles, which it Southwest. However in the film they refer to Alamogordo as a separate city "this guy's from the FBI office in Alamogordo", and they whip out a map which indicates all the incidents are on the road between Alamogordo and El Paso (which is due south and nowhere near any white sand). There are no closer settlements to White Sands than Alamogordo except for Holloman Air Force Base.

However if I remember right, there's only ONE town on that road Arness points to (the one between Alamogordo and El Paso), called Orogrande... which was tiny, like 100 people, and would not have been nearly large enough to facilitate a 5+ man police force with two cars and a plane.

Is the beginning of the film supposed to take place in Orogrande... or more realistically Carizozo (which is much closer to the nuclear test Trinity site than Alamogordo)?

Also, where Arnes points to on the map as the location of the first atomic bomb test is waaay off. The site is almost 80 miles due north and west of where he's pointing, midway to Socorro which is way northwest of Alamogordo, not Southwest where he's pointing.

Are these mistakes or is this deliberate fictionalization?