F-35 air-to-ground weapon

WASHINGTON — The Air Force awarded Northrop Grumman a $705 million contract to develop and test a high-speed air-to-ground weapon known as a stand-in attack weapon that the F-35 Joint Strike Fighter could wield to destroy enemy targets. Northrop said Monday that its work on the second phase of the weapon, which is also referred to as SiAW, will take place over the next 36 months in Northridge…