The Aerospace and Defense industry was the first to use PERT, Earned Value, Critical Chain, and now Earned Schedule. It was also the first to use IDEF for process modelling. In fact, mostly every advanced project management method and technique originated from the defense industry.
To stay in touch with the latest news on industry best practices, check out the PMI's Aerospace and Defense Specific Interest Group. I did, for that very reason, and now serve on their Board of Directors.
PMI Aerospace & Defense Specific Interest Group