If I am not mistaken the C130's are stationed at Cannon AFB and the KC 135 might have been there for refueling training. If you are talking about the Pilatus U-28A Spectre flying in a cirlce switch your map to satelight view and zoom in and look around. It appears to be a training area with a compound made of shipping containers and a military "junk yard" nearby as well as a communications center of some sort as well as a range with berms. Zoom in and look around you will be surprised what you might find.