I saw one small flash of light then a reddish looking fireball that shot across the sky then disappeared then same a similar one after...I was standing outside on my front porch watching the stars when I see some move quickly out of the corner of my eye. When I turned my head to see what it was, I saw a sudden flash of light and a red fireball shaped "unknown" zip through the sky then disappear. Moments after that I saw a second "unknown" move through the sky but this time it had a yellowish tint to it.I do believe that we as humans are not the only intelligent life form on the galaxy and believe that there is extraterrestrial life forms out there. Whatever it was that I saw tonight wasn't the first time that I've seen it and to be perfectly honest it creeped me out because if I can see "them" from earth then I know they can see me from wherever they are up there.