Northrop Grumman said on Monday that it has delivered to the U.S. Air Force a Stand-in Attack Weapon (SiAW) test missile "to verify that the launch

Northrop Grumman has delivered the first Stand-in Attack Weapon test missile to the US Air Force to target relocatable threats.

Flight testing of the U.S. Air Force's Stand-In Attack Weapon (SiAW) missile is now set to begin following the delivery of an initial test article. Derived from the AGM-88G missile designed primarily to punch holes in enemy air defenses,