The Nano-Armor Kit is the Engineer's tool of the trade. With it, the Engineer can repair vehicles, turrets, generators and terminals, allowing his/her faction to dominate the battlefield. The Nano Armor Kit suffers from overheating; prolonged use can lead to the tool having to cool down. File:Nano-Armor Indicator.png A bar similar to the above will appear on your HUD when in use. When it reaches full capacity, the tool will have to cool down for a few seconds. However, manually stopping the tool before it reaches its peak will allow it to cool down faster.