Firing Tank Operator Drew Carlson (foreground) safeguards the mouth of the 10kg spherical firing tank at LLNL’s High Explosives Applications Facility as Electronic Technician Raya Yy (background, left) and Ramrod Shawn Strickland wire a high explosive charge for an experiment. The experiment will provide data important to certifying that a refurbished nuclear warhead will work without conducting a full-scale explosive nuclear test. Photos by Julie Russell/LLNL