I've written before on Seeking Alpha about my interest in tangential or niche plays on popular industries, such as Air Lease (aerospace) or Entercom (media). Industries that gain public affection and become market darlings see the stocks of its most important and biggest firms take off quickly and sharply. What takes more time, however, is the stock of ancillary companies in the industry that may be buried somewhere in the supply chain or a third party vendor reach similar heights. Similarly to Air Lease (NYSE:AL), AAR Corporation (NYSE:AIR) operates in the