1) Военный термин: North American Aerospace Defense, North American Air Defense, North American Air Defense (US)
2) Техника: North American Air Defense Command
3) Политика: New Outer Ring Alliance Democracy
4) Сокращение: NORth America (air) Defence (Command), NORth American (aerospace) Defense (Command), NORth American Defense Command, North American Aerospace Defense Command, North American Air Defence Command
5) Военно-политический термин: North American Air Defence System
Универсальный англо-русский словарь. Академик.ру. 2011.