| natca.net | Dallas/Fort Worth Wing |
| opeiu.org | Office and Professional Employees International Labor Union (OPEIU) |
| nalc.org | National Association of Letter Carriers |
| liuna.org | The Laborers' International Union of North America (LIUNA) |
| iamaw.org | International Association of Machinists and Aerospace Workers |
| npmhu.org | National Postal Mail Handlers Union |
| navcanada.ca | Nav Canada |
| egats.org | EuroControl Guild of Air Traffic Services |
| catca.ca | The Canadian Air Traffic Control Association |
| atns.co.za | Air Traffic and Navigation Services Company Limited |
United States , New York , Binghamton