Oval flying object traveling north to south, seen around three times in the past two years.I was sitting on my front porch at 7:45 pm. This is the third time in two years I've seen this oval flying white object travel in front of our home at the height of a low flying plane. It traveled from north to south (heading toward the Gulf of Mexico). I ran to get my daughter and a cell phone to get a photo. It had gotten too far away by the time we ran outside. The cell phone camera didn't pick it up. Whenever I bring my actual camera outside with me, I never see a thing. I just don't think it is a plane or a helicopter. There is no sound.