Unidentified Flying Objects.
The headline "Residents see flying saucer over Vancouver, WA" reminded me that I saw a UFO once.
I was about 14, and it was a hot summer night at my dad's small apartment in one of Vancouver's suburbs. I was out on the back deck looking up at the sky, and I saw a bright green triangle dancing across the sky. It swirled around over the same general area, and stayed for the entire half hour that I watched.
I was able to identify that object the next evening, when we drove into the neighboring commercial district in town. I saw that the local car dealership had a big laser light display to help advertise their latest sale.