HUGE black stationary aircraft with unknown shape south of I-10 near Deming.My girlfriend and I were on I-10 west. For several minutes before saying anything (I was reading out loud, oblivious) she kept her eye on a craft she saw over a mountain to the south of us. This was about five to ten miles east of Deming. She pointed it out "this thing isn't moving".The craft was large, black with a shape we could not define. Hot air balloon? Definitely not. Blimp? Nope. Helicopter? Maybe. If it was a very, very, very large helicopter remaining stationary for an incredible length of time. We watched this thing closely. It was at least two hundred feet above the peak of the mountain but we could not discern how far south (how far away from us) it was. We were certain, though, that it wasn't moving. Not up nor down and if it was moving away it was doing so at an amazingly slow pace.We passed the mountain to see that it was avidly quite far from the mountain and closer to the town of Deming. We exited a few miles up and attempted to head south in the town to get a closer look. At this point the sun was going down quickly. It wasn't until then my girlfriend claimed see some light flashing on the craft every so often, something we hadn't witnessed from the craft even though airplanes nearby were lit up for a long time before this.Now it finally appeared to be moving further south of Deming at an extremely slow pace. We decided to return to I-10 and were able to keep our eyes on it until we drove too far away in the darkness for any further visibility.I will add that at certain points we were witnessing what appeared to be two pieces of the craft sort of pulling slightly apart and coming back together. I rationalized that if it was a large military chopper it could've been shifting position and we were seeing it angle the propellers toward then away from us. If I'm being totally honest though it looked much stranger than that. I also felt as though I was seeing an aura or field of sorts around it, but that could simply have been my mind playing tricks with the sky around the craft.All in all we watched this huge craft essentially hover with no lights for over thirty minutes near Deming. We have some crappy phone cam footage. Would really like to get into contact with others who seem to have witnessed something similar near Deming!((NUFORC Note: Witness elects to remain totally anonymous; provides little contact information. PD))