At AA they are known as Aircraft exterior cleaners. It goes back to the days of aircraft polishers. When I hired in back in the 80's we had a significant amount of Exterior cleaners. Over time the numbers reduced due to retirements. Some were crossed over to cabin service but still had the title of exterior cleaners. I do not know how many are still employed under the same title but AA has stopped hiring cleaners under that title group for some time now. We also have building cleaners but AA outsourced them with the 95 contract. I believe that there may be some left at the main base. All gone at the line stations.