2020-05-17 - Fort Worth, TX - Unknown

I was standing outside at around 15:05 this afternoon when I noticed several small objects traveling due South at what appeared to be very high altitude. there were at least 7 or 8 of them in a very loose group. they were either producing green reflections, or were lit with a brilliant green color. At times some were visible, at other times they would disappear, and other noes would become visible. the weather was mostly clear and I was able to get a few photos, although none are very clear. I have worked on aircraft most of my life and these did not appear to be conventional planes. Planes flying together normally fly in some sort of formation rather than a loose random group. There was no order to their group. They continued flying South at what appeared to be a cruise speed, not in any hurry, until I lost sight of them.