Nuclear Fuel Services, Inc. (NFS) is a strategic asset for America and an economic engine for Northeast Tennessee. With more ... than 1,000 full-time employees and contract workers, NFS is committed to manufacturing specialty nuclear materials for the U.S. Navy and other customers while protecting its workers, the public and the environment. NFS has been the sole manufacturer of nuclear fuel for the U.S. Navy’s fleet of nuclear-powered air craft carriers and submarines since 1964. read more