Last Sunday a friend helped me pick up a pair of JBL 18" speakers/cabinets and afterwards we were sitting out in the back yard shooting the breeze. Then he asks me pointing up to the west in the distance "What's that???" I look up and in the distance I can see something shimmering, like a mylar balloon..., but not like a mylar balloon. It was a breezy day (Santa Anas) and this thing was slowly "tumbling in place" but wasn't going much of anywhere. We watched it for about 20 minutes before it went out of sight. You could see the light reflect off of it and it seemed to cast a shadow on itself. I got the binoculars and told Linda to bring out her camera to capture it. This is with a 500 mm lens on a Nikon D750 and blown up. Certainly not the blimp and not like anything we've ever seen before. Also, would had have to have been very large and distant, or it would visibly get smaller as it moved. And I can't imagine it's a mylar balloon or it would have been moving in the open air. Anyway, it would not be like any mylar balloon we've ever seen.