Last night after dinner, me and my girlfriend went outside to smoke a cigarette. Me and my girlfriend are constantly witnessing strange events in our beautiful New Mexico sky so last was especially strange. I walked out first and was standing near the street where there was more light then usaul because of the front porch lamp being on. My girlfriend came out a few minutes afterwards and was standing on the side of the backyard where there almost no light. Almost as soon as she looked up she started yelling for me saying, "Babe, look!! Look, can you see that?! What is that?!" So i ran twards the back where she was and saw a giant triangular shaped object that was dark gray and was moving pretty quick and maneuvering in ways that an airplane couldn't and with absolutely no sound. We live in a neighborhood that is in line with the airport runway, so lights being on on a aircraft is highly required and this object was stealth. No lights at all!! We watched the news to see of anyone else saw it but nothing was reported. I guess we will just have to keep an eye on our sky .....