Update 2.10b: Closed Circuit Rebreather Gear + Back-mounted operator gear

Addition: Closed Circuit Rebreather Gear

Addition: Gear placed on the back of the tactical vest is now available in the Backpack category

Addition: Back-mounted tactical vest gear to official squads

Fix: Issue in Quick Orders where available orders were not updated when switching operators

Fix: Issue with the operator height slider

Fix: Some AI errors