War Thunder - How to Lock on to Shoot Earlier

This video will teach you how to be able to shoot earlier than your enemy in “War Thunder”. Target icons for your enemy will pop up within a certain distance but you can make it pop up earlier by Locking On to your target using the Middle-Mouse Button. When locked on, you can also use the ALT key to keep your camera on your target, which makes following them in a dogfight much easier.

[LoganStarFighter]

Once you lock onto someone, how do you unlock?