In the following video, Motley Fool industrials analyst Blake Bos gives investors a little perspective on one of the often-ignored risks with Boeing (NYSE:BA). He takes a look back to Lockheed Martin (NYSE:LMT) in the late sixties, and gives investors the cautionary tale of what happened to the company when one of its major suppliers, Rolls Royce, went into bankruptcy. Could Boeing be at risk for a similar supplier calamity?