What does llns do? (LLNS) offers a team of world-class organizations whose primary objective is to deliver the National Nuclear Security Administration mission for Lawrence Livermore National Laboratory. GEN. KEVIN CHILTON, FORMER COMMANDER U.S. STRATEGIC COMMAND, NAMED TO LAWRENCE LIVERMORE BOARD OF GOVERNORSHow do i contact llnls public information officer? Visit the Media Contacts page to find public information officers for each LLNL program area. For immediate assistance, a public information officer is always available to respond to questions from the news media. Journalists may call 925-422-4599 at any time for help in reaching a public information officer.What does llnl stand for? NNSA's Lawrence Livermore National Laboratory (LLNL), located in Livermore, California, is a design laboratory that is responsible for the safety and reliability of the nuclear explosives package in nuclear weapons. It supports surveillance, assessment, and refurbishment of the nuclear weapons stockpile.Where do i mail my lawrence livermore national laboratory materials? Lawrence Livermore National Laboratory. 7000 East Ave., Livermore, CA 94550-9234 (get directions) P.O. Box 808, Livermore, CA 94551-0808 (Mail)