I need to find Techniques Employed on the article http://www.theonion.com/articles/american-airlines-now-charging-fees-to-nonpassenge,2614/?ref=auto
Remember this is coming from the Onion, satirical in everything. Assume by your question, you need techniques the article uses, rather than critiquing the article itself. Remember that satire often uses real entities (in this case, American Airlines); and uses a real life situation (current hard times), to make light of the SITUATION. They are using this made up story to provide a funny look at our economy, as well as demonstrate how far corporate greed will go to line their own pockets. Everything is a metaphor. The airline may stand for corporations, the fee may stand for attempts at geed and so on. To use the techniques the Onion does, is to make creative and funny use of metaphorical writing. Things in the articles stand for something else, I.e. metaphors.
Write like this and you'll get people laughing because they see what you're trying to say without quite relating the "true facts."
Hope this helps.