When Aang went to disable one of the ships during the Siege of the North, he first destroyed the five trebuchets that the operators were supposed to man. Aang destroyed the first trebuchet by sending an air blast down from the top of it. The second one was destroyed by putting a hammer in the chain so that it created a hole in the ship once launched. Aang destroyed the third and the fourth by tying the nets of the trebuchets together so that when the trebuchet in front launched, the one behind it smashed into the one in front. Aang was about to destroy the fifth one with a hammer, but was stopped by the leader of the trebuchet operators, who swung his hammers around on chains. Aang dodged the leader of the trebuchet operator's hammers for a while until Appa came, picked up the leader, and