There was an interesting segment on today's earnings call where PPP provided more color on the aerospace company validation of the AM offering.

He mentioned the potential client's repeated inspections of both powders and company facilities (first time I have heard the part about the facilities) to ensure quality and consistency of product, given the caution and conservatism of that industry when it comes to materials. As an airline passenger, I found this reassuring. As an investor I was encouraged by the thought of the aerospace company really kicking the tires -- shows seriousness of purpose on part of the prospective client.