We saw a UFO that night that was about 400 feet long that made no sound and had a beacon of light shining out of it like it was looking

It was about 2:00 AM in the morning I and my bother in law were fishing on some property I had near San Antonio Texas. I looked over to my right shoulder and there was a light on the ground. The pattern was about 10 feet wide. But there was not a shaft of light coming to the light on the ground. I look up and about 150 away from me in the tree line was a UFO just hovering above the tree tops. No sound emitting from it at all.  I told my brother in law and you believe that. We both looked at each other and kept fishing. We both are very well educated and have white collar jobs. We did not say anything to anyone in fear of losing our careers that we want to keep. So we made a pack not to tell anyone about this sighting. Until now we have not repeating to anyone what we saw. I just wanted someone to know what I saw. It was about 400 feet long and not a light on it. I could only see it by the light of the moon being behind it. I was there for about ten minutes and it took off. The craft went staight up and out of sight. Just wanted to tell my story to someone that might understand what we saw that night.
Regards  ((name deleted))
Witness indicates that date of incident is approximate.  PD