Airstrike

(Defense 3) is the third Defense in ScrapTD. It's the third pursachable in the game and costs 200 bricks to unlock.

Strategical use
Defense 2 is very strong and this one costs a lot. It takes some time until it's pursachable. It's the first that can attack flying barrels, perfect against Lurid Layered at a cost of 500000. It's suggested to buy the first three at the beginning.

Trivia

 * It currently has got no name.