Add to Spacial DB, it is a parameter in unit's ammo, like the artillery shell, like the base_artillery. When an ammo's .json has Add to Spacial DB defined as OFF, it cannot be targetted by countermeasures. If a Nuke was ASDB OFF an Antinuke would not target it. So, theoretically, to get a Gil-E to target Artillery Shells, you need to type True into Add to Spacial DB. Then add the artillery shell into the Gil-E list of task targets. THEN the Gil-E will shoot them. Thought I would spread the word.