
LIVERMORE, Calif. — The W80-4 warhead’s final design reviews are complete and its first production unit is still on track for fiscal year 2027, a senior official at the Lawrence Livermore National Laboratory official told the Exchange Monitor here Tuesday. “We’re in a phase called production engineering,” Brad Wallin, Livermore’s deputy director for strategic deterrence, told the Monitor at a planned press tour of the Lawrence Livermore and Nevada National Security Site. “[T]hat means we have our design, and we’re working closely with…