I miss seeing "the goodyear blimp" at the Portland air show. When I was a kid in the 80's and 90's, they'd always have the blimp come out and fly around the metro area for a week. It was so cool to see this absolutely huge thing floating around the sky, over your house, etc., with the deep droning mrrrrrrr of the multiple props. It was almost like an alien space ship (to us kids) because you never saw anything in the skies except birds and planes. Everyone would run outside pointing up at the sky when it was passing overhead.

Edit: It looks like the Goodyear Blimp is still a thing! It's going to be in PA/SC/LA this month. Here's the schedule: https://www.goodyearblimp.com/news-and-events/schedule.html