Three brilliantly white Lights hovering in the sky

While I was walking my dog late on Friday night I happened to notice three very bright white lights in the shape of a triangle, its position was at 89 degrees of the compass and about 30 degrees above the horizon. I watched this object for about 30 minutes, it never moved from its position, and then it just disappeared from view. There were no sounds or movement coming from it. I'm a veteran, I've seen all sorts of flares and bright lights, but the light that was coming from the object was the most brilliant light that I have ever seen in my life. My MOS in the military was Air Traffic Controller, I have many years of experience when it comes to aircraft and what should and should Not be in the sky. This was not any conventional aircraft that I know of. Friday night was a clear night with no cloud cover at all.