2 round balls of fire hovering over the southern part of South Korea-4 witnesses that I know of.My wife, son, and I were at a Ski resort in South Korea about 30 miles east of Suwon. It was around 19:50 and I was watching the people on the ski lift and I was looking South in the sky. It was a full moon and no cloud cover, it was a clear night. I witnessed two balls of fire, one was dim and seemed a little further away, while the other one was brightly burning. they were moving in opposite directions. I could not tell how far away nor the actual size. I am in the U.S. Army and I immediately ruled out a fixed wing aircraft and within a couple more seconds I was able to determine it was not a rotary winged air craft either. I got the attention of an employee at the snow sled area and I also informed my wife to look and video tape it. It was in the sky for approximately 8-10 minutes.