Solo Module: AEO closest to a "Target"

[Broadsword56]

What's the definition of "Target" in the solo cards?

Usually the cards tend to say "a unit," so I'm thinking the difference is that "target" means not just an enemy unit but an enemy-occupied hex that's spotted and within range and LOS of the AEO in question.

But I'd like to know the official explanation, please.

 

[Barthheart]

That's the way I read it. Something you can actually shoot at.