The first installment in the new Fortress Series of enclosures from SilverStone is the FT01. There has been some controversy around this case, with arguments over the direction of airflow of case fans, and the term "positive air pressure" has been thrown around quite a bit. What is all this hub-bub about? What is positive air pressure, and why should you care? These are just a few of the questions that we will answer today.