One time, summer of '76, me and a friend were out cruising around late at night, probably having a few beers, and we noticed a fire burning way up a canyon. We went and called the fire warden, got him out of bed (probably closer to early morning than late at night) and he came and met us and we showed him the fire. He got out his binoculars and checked it out and sure enough, he says, so we all get in his truck and start up the canyon. We hadn't gone a hundred yards and went around a corner and onto a drilling location where someone had left the roof lights on on a water truck!
We all had a good laugh over that. That water truck was parked in such a way that we could see one light, then the 3 in the center kinda blurred together. It looked amazingly like a fire in the distance.