Air Cannons are small, floating cannons in Four Swords Adventures that can blast Link high in the air up out of a roof, hole, or into another cannon. On such occasions, there are usually large Force Gems for the Link(s) to collect. The cannons are somehow large enough to hold all four Links, and are present in virtually every stage of the game, and sometimes even needed during boss battles such as Vaati and Stone Arrghus.