Did I see a UFO last night? Help me figure it out

Sorry for the poor video quality. Skip to 1:00 to avoid shaky footage.

4 horizontal lights appeared suddenly over the horizon of desolate farm land near the Columbia River in Vancouver, WA on 10/15/22 around 9pm and remained for many hours.

At the end of the video the lights began flashing in rhythmic pattern. Hours later I looked up and they were gone.

I took pictures the next day in the sunlight to show the horizon being all treeline, and provided a screenshot of Google maps to show my location.

I'm looking for an explanation what these 4 lights could have been hovering over out in the middle of desolate farm land. Do any helicopters look like this?
Unique farming equipment maybe? I ruled out any ground equipment due to the object height being over the trees. What do you think it could be?