Airstrike

Airstrike is the third Defense in ScrapTD and costs 200 bricks to unlock.

Strategical use
Airstrike is the weakest defense and costs a lot, it takes some time until you can build it. It's the first that can attack flying barrels, but isn't really strong against Lurid Layered. Several Aistrikes can defeat few Lurids, however it is often better to wait for Double Pain, which will get rid of them in no time. It can help quite a bit to clear out Banana Hole, but usually you just skip this one and use Shooting Box instead, which destroys Bananas.

Trivia

 * It was named by Schrottii in update 0.4, inspired by the Airstrike article in the english wikipedia.