Air attacks against "hidden" units

[Brett Nicholson]

That was precisely why I asked the question as the core rule 15.11 states. In 'Guadalcanal' American units are encouraged to spray seemingly empty hexes with DF to reveal hidden units and aircraft are DF units. I suppose that it is left up to player discretion or interpretation though if nowhere it states absolutely that units can or cannot do this or that. The same would go for digging-in jungle hexes which are not woods and have different combat modifiers than woods; the rulebook only cites woods, towns and entrenchments are prohibited.