Brilliant silver vertical cigar shaped object moving slowly which suddenly disappeared followed by a big flash.On Tuesday, February 10, 2009 my brother came to my office at my workplace to debug my computer as I was having problems with it.At approximately 11:15-11:30 am we walked out on the porch for a smoke break and my brother commented on an airplane he was looking at. When I looked up I saw a brilliant silver object that to me appeared oblong,(cigar shaped), vertical, and approximately 1-1/2 inches in height moving slowly from left to right.When I remarked that it looked like it was standing straight up he agreed that it did appear to be vertical. We watched maybe 15-20 seconds and all of a sudden it was gone. It just blipped out and far to the right was a big flash and we watched for several minutes searching but it did not reappear.Although there were a few thin clouds, the sky was clear and there was absolutely no way it could have disappeared behind them because they were too far away. Upon reflection, I recall having seen the same thing in the fall of 2008 while standing in my front yard and I recall thinking that it was odd that it disappeared so quickly and actually decided that it was just a reflection of some kind.