I don't think that counts as a proper noun? I'm not sure.
Uh I wasn't exactly sure about the rules... there have been multi-word clue before, no? Sorry if I messed up, but giving another tip would be stupid now, right? We could do some compensation like reveal a random red word if you feel it's against the rules. Anyway it's a single noun in German
Multiple words are only allowed for proper nouns, i.e. a specific thing, like a book title or a specific person or place.
Eevee will have to decide whether to call for a penalty or not. I can't check right now but I think the rule book recommendation is immediate turn end and flip a word of opposing spy master's choice.
But FWIW, I only see one obvious word anyway.
PPE: it's not a proper noun because there are different air forces out there, right?