All of this started at about 7:00 PM to after 10:00 PM. 3/12/14 On border of CO and WY, at chalkbluffs. Stargazing with wife. First noticed bright light on southern horizon that split into two lights. For over three hours we watched lights of varying intensity come into the area from the southeast to the south. None of them landed. Some seemed like they were combining. At one point there were five in a row, then three of them repositioned into a triangle shape. Some would grow very bright, then dim out or fade away entirely. When aircraft would come into the area, they would all fade out. After aircraft left, they would turn back on. Hard to say how many me and my wife saw. If each time would one appear it was new craft, then we saw dozens. I am certain many of them were the same craft however. I feel as though we probably saw a dozen different ones, however the most that were visible at once were five, but it looked as though a sixth very dim one was there as well. Was able to see them through both a telescope, and binoculars. Most of them were bright orb shapes, one appeared to be a diamond. Even as we left for the evening, one was still on the horizon cycling between dim and intense. More intense then anything else in the sky except the moon. They did not have aircraft lights, and they did not blink. At multiple times during this, we could hear a very strange pulse or thump. It was off and on and was varying in loudness. Hard to tell where it was coming from. Not sure if it came from the objects because they were a few miles away at least. I would like also to state that I was able to keep one right in my telescope for maybe around five minutes. Anyone who has ever used a telescope can agree that when looking at a star or planet, you have to track it slowly due to the rotation of the earth.