I am sorry. I will make a promise to evryone. When I post a F-15 story, I will post a F-15 picture. I always keep my promise.
That is a beautiful airplane. I noticed the “ET” designation on one many years ago at an airshow at Eglin. There were quite a few pilots at static displays who would converse with the public.
I told one that I knew that “EG” meant Eglin but what did “ET” mean. He said it was not extra terrestrial, but “Eglin Test”.