also, what's a typical day like for a pa? expectations?
Just have a bunch of those situational questions about a difficult task, teamwork, too little time, etc... They want to hear about the problem, the solution, if it worked, what you learned!
My advice, sit down with a TL or ETL for a mock interview and sit down with a notebook and think of things in your past that show some of the traits they want, that way when they ask the question you will be able to whip out an answer without sitting there trying to think!!! That by it self shows that you are prepared and have taken the steps to show you are capable and that means almost as much as your history/performance.