Hovering bright light thought to possibly be Venus near the horizon intensity grew brighter then it turned north until out of sight.

Viewing the night sky from the backyard on the lake at our fire pit, I noticed what I thought was a planet near the horizon that was unusually bright. I didn’t have my phone to check what could be seen in the night sky. We were viewing the west sky. From the south we heard than saw 2 or 3 helicopters, thinking military, fly in formation north over the lake out of sight. That was unusual in itself. Husband thought they turned west toward the UFO at one point. It was then that I remarked I wondered what that planet was and then the light grew brighter and larger, then smaller and began to move north. We also noticed a boat in the lake near our dock that seemed to moving around in a circle then left after the the light was gone. We rarely hear or see helicopters at night or boats on the lake at night lingering so near our shore. I assumed it was some kind of plane . My husband went over to talk to neighbors out at their fire pit and they all saw it too. Neighbors dogs had started barking prior to the helicopters arriving.