Extraordinary teams building inspiring projects: Since 1898, we have helped customers complete more than 25,000 projects in 160 countries on all seven continents that have created jobs, grown economies, improved the resiliency of the world''s infrastructure, increased access to energy, resources, and vital services, and made the world a safer, cleaner place. Project Overview: Bechtel is the Engineering, Procurement, and Construction (EPC) partner on the Northrop Grumman team to deliver the Sentinel Program, which is modernizing the ground-based leg of the U.S. nuclear deterrent triad, including intercontinental ballistic missile (ICBM) systems and launch infrastructure.