Los Alamos National Security, LLC was a private limited liability company (LLC) formed by the University of California, Bechtel, BWX Technologies, and URS Energy and Construction. From its creation until November 1, 2018, it operated Los Alamos National Laboratory (LANL) for the Department of Energy and the National Nuclear Security Administration. It took over direct management and operation of the Los Alamos National Laboratory from the University of California on June 1, 2006. It was based in Los Alamos, New Mexico. Operation of Los Alamos National Laboratory are now overseen by Triad National Security.