I don't know how they see things so well. I was watching full screen, and they were saying, "Yeah, I see that guy! He's climbing up to your six!" And I didn't see a thing! At one point, the guy taking the video was shooting at a '109 right in front of him....and I still didn't see it!
"From our orbital vantage point, we observe an earth without borders, full of peace, beauty and magnificence, and we pray that humanity as a whole can imagine a borderless world as we see it, and strive to live as one in peace."
Astronaut William C. McCool RIP, January 29, 2003 - Space Shuttle Columbia