Heightened Clearance

Heightened Clearance is an upgrade for Allied Construction Yards and Command Hubs. For 1500 credits, it grants the commander access to tier 2 technologies, allowing the commander to deploy more powerful units and construct advanced structures, as well as unlocking Max Clearance.
The clearance signal is only broadcast in a small radius around the Construction Yard or the Command Hub. Any structures outside of the broadcast radius cannot produce tier 2 units until a Construction Yard/Command Hub located nearby purchases the clearance upgrade.
Units unlocked by Heightened Clearance
Barracks 	Armor Facility	Airfield 	Naval Yard
Spy 	Guardian Tank 	Cryocopter 	Assault Destroyer
Cryo Legionnaire*	Pacifier FAV* 	Century bomber	
Italics = Uprising only 
* = Requires defense bureau	Italics = Uprising only 
* = Requires defense bureau	Italics = Uprising only 
* = Requires defense bureau	Italics = Uprising only 
* = Requires defense bureau
== See also ==
*Max Clearance
Category:Red Alert 3 upgrades