The Air Force is nearing source selection for a bomb designed to replace the legacy BLU-109, a 2,000-pound-class weapon that can damage deeply buried targets. BLU-137/B, also known as A2K for "advanced 2,000-pound" warhead, adds precision, navigation and timing capabilities to bolster its survivability and "hold more targets at risk than currently achievable with the legacy weapon," according to the Air Force's fiscal year 2018 budget documents. In August, Eglin Air Force Base, FL, said it conducted three 40-foot drops...
