Max Clearance

Max Clearance is an upgrade available only to Allied Construction Yards and Command posts.
Once researched, it opens the 3rd and final tier of the Allied Arsenal. However, a Defense Bureau is required to unlock some units.
Note that the upgrade has only a local effect, meaning that if the Construction Yard has researched Max Clearance then it will only affect production buildings in its vicinity only.
However, you can research the clearance via command posts themselves if you want to grant your production buildings with improved clearance at the cost of researching the same upgrade individually.
Units/Structures Unlocked
Boot Camp	Armor Facility 	Airbase 	Seaport
Tanya* 	Athena Cannon 	Century Bomber 	Aircraft Carrier
 	Mirage Tank 	Harbinger Gunship*	
 	FutureTank X-1*	 	
Italics = Uprising only
Bold = Base game only* = requires defense bureau	Italics = Uprising only
Bold = Base game only* = requires defense bureau	Italics = Uprising only
Bold = Base game only* = requires defense bureau	Italics = Uprising only
Bold = Base game only* = requires defense bureau
==See also== 
*Heightened Clearance
Category:Red Alert 3 upgrades