I was inside getting ready to watch a new episode of my favorite tv show after work, and heard loud jet noises outside. I had heard these noises before in recent years and observed a single large triangle craft flying overhead with the noises. Thinking I may be able to observe the craft again I raced outside.Once outside I was able to see the craft flying overhead much lower than it did before. After watching the craft for a few seconds I noticed something I had not seen before; on each corner there was a glowing orange light that seemed to slowly pulse, and also this time I observed 3 craft not just one. The 3 craft formed a triangular flight pattern and only the front craft had the light turned on for it's leading point, the other 2 craft only had the rear lights turned on.I am not sure of any military craft that are as large as these objects that would be triangular. The outline of the craft was very clear against the starry night sky.I observed the 3 craft fly north east of me and then begin to ascend, I attempted to wave at them to see if anything would happen but I soon lost sight of them behind the top of the trees.