Supporting the nation since 1946, Naval Nuclear Laboratory is the government-owned, contractor-operated research organization dedicated solely to naval nuclear propulsion. Nearly 8,000 employees work across its laboratories and training sites to develop technology for the Navy and prepare Sailors to operate nuclear-powered ships. Its history reaches back to Bettis’s engineering work on the prototype plant for USS Nautilus, the world’s first nuclear-powered submarine.
Naval Nuclear LaboratorySupporting the nation since 1946, Naval Nuclear Laboratory is the U.S. Navy’s nuclear propulsion laboratory, known for developing technology that keeps submarine and aircraft-carrier fleets operating safely and reliably. It also trains the Sailors who operate those reactors, bringing engineering expertise directly to the fleet’s mission.WEST MIFFLIN, PA
BWX Technologies, IncTracing its roots to the 1850s, BWX Technologies, Inc. manufactures nuclear systems and components for U.S. naval propulsion, commercial energy, national security and space applications. The Lynchburg-based company has nearly 10,000 employees and 20 major operating sites across the United States, Canada and the United Kingdom, including a one-million-square-foot facility in Lynchburg. Its work also extends to nuclear fuel, environmental cleanup and nuclear medicine, with a history that includes components for the USS Nautilus, the world’s first nuclear-powered submarine.EUCLID, OH
HIIWith roots in Newport News Shipbuilding, founded in 1886, and Ingalls Shipbuilding, founded in 1938, HII is a defense company shaped by more than 140 years of American shipbuilding. Formed as an independent company in 2011, it now employs more than 45,000 people and is known for building the nation’s nuclear-powered aircraft carriers for the U.S. Navy. HII also develops mission technologies for defense and intelligence customers.541330PHILADELPHIA, PA
Ordnance Technology Services, IncFounded in Cleveland in 1987 by former MK46 torpedo program manager Stan Allenby, Ordnance Technology Services is an employee-owned defense manufacturer supporting the U.S. Navy’s undersea missions. Its Concord Township operation grew from the region’s century-long torpedo tradition and now provides lifecycle support for torpedo systems from a 75,000-square-foot vertically integrated facility. OTS became 100% employee-owned through an ESOP in July 2026, preserving the independent culture built around its Navy work.CONCORD TOWNSHIP, OH