It seems like the tertiary objective is, ironically, to blow up the very thing you are supposed to defend in the first primary objective (the industrial plant at nav kappa). But I can't get this mission to end successfully in DOSBox, so maybe it's glitchy in general in my current set-up.
leave it to the falcons to destroy their own objective to get an objective lol
James 3:5-10: My Reminder
And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body. Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be.