For the fourth year, Lockheed Martin’s sustainability report relies upon guidance issued by the Global Reporting Initiative (GRI), the world’s most widely used sustainability reporting framework. We report in accordance with G4 Core, the latest GRI guidelines. The determination of which GRI Aspects are material to our business is a direct result of our Core Issues Assessment as described in our 2015 Sustainability Report. This formal process included ongoing feedback from internal and external stakeholders. The process and procedures for the data collection and reporting underwent a third-party review. GRI Indicators G4-12, G4-17 – G4-27, G4-34, G4-EN3, G4-EN6, G4-EN15, G4-EN19, G4-LA6, G4-LA12, G4-PR6 and G4-SO4 underwent third-party assurance.