The National Nuclear Security Administration (NNSA) is responsible for the maintenance and
security of the Nation's nuclear stockpile, management of nuclear nonproliferation activities, and
operation of the naval reactor programs. A significant amount of the information related to these
mission activities is classified and stored or processed in national security information systems.
The Lawrence Livermore National Laboratory (LLNL) maintains various national security
systems, ranging from diskless workstations to large supercomputers, which process sensitive
and classified information in support of program objectives.