Grav Shield
General Information
A Grav Shield doubles the potency of your offensive Base Defense Measures, allowing each one to fire twice against an attacking UFO.
Contrary to popular belief, the Grav Shield's abilities do not stack. You can build multiple facilities but only the first will allow your defenses to fire again.
This base facility appears in UFO: Enemy Unknown. For the Terror from the Deep equivalent, refer to the Bombardment Shield.
Statistics
Construction Time: 38 days
Construction Cost: $1,200,000
Maintenance Cost: $15,000/month