i wonder if any of them have thought of or heard of the downwinders program, related to the above ground testing of nuclear devices in the 60's and 70's. it blew radiation over a number of states, and i might think there would be radiation blowing around in some of that desert.
For any who wander into the wrong places on the Test Site...song dedication...
https://www.youtube.com/watch?v=2zOoAPn3OjQ