lasted over 1 week, hard to focus on because of changing size, like closer and farther way, but in the same spot in the sky. there were 2 moving vehicles with 2 lights each, one in front of the other, the lights were like powerful headlights. the large round object didn't always have the flat bottom. My Wife and I were home at the time, it drew our attention because of its size and not a normal object to see in the sky. Our feelings were that either a weird gov't secret thing or more to being a ufo. We didn't actually loose sight of it, one night it just wasn't there anymore. Hope the video gets thru to you, if not, I'll try and put on a dvd.