what is aviation ordnance
Aviation ordnancemen are a close-knit community and one of the few ratings in the U.S. Navy to have their own association, the Association of Aviation Ordnancemen. In addition, the aviation ordnanceman slogan is IYAOYAS, meaning: If you ain't ordnance, you ain't shit.. One of the most notable aviation ordnancemen was Lieutenant John Finn, who came up as an enlisted sailor making it to the rank of chief petty officer.