This is the third time I have covered the US school bus maker BlueBird (NASDAQ: BLBD ), and I have given them a Strong Buy rating each time. In my first article, I described themI look at small to mid-cap companies with disruptive technology. I provide competitive analysis of companies and often research the founders and their previous endeavors. I follow, investigate and report on companies that I believe have growth potential and highlight some of the ones best avoided. I invest with a two-year time frame ...