The Pentagon's acquisition executive has established a standing advisory panel to regularly assess the vulnerability of U.S. military weapons to attack from an electromagnetic pulse designed to cripple microcircuits and electronic systems. Ashton Carter, under secretary of defense for acquisition, technology and logistics, directed the Defense Science Board to form a permanent task force “to assess all aspects of survivability of DOD systems and assets to EMP [electromagnetic pulse] and other nuclear weapon effects,” according to a previously unreported March...