i think that Ba Sing Se will be attacked by ''War balloons''. if u saw the ''Northern Air Temple'' u know what im talking about... the FN already tried to defeat BSS with a giant drill, but they failed thanks to the avatars help. i dont think they will give it up though. with the balloons they can control the sky, which means that they wont get any problems??crossing the giant walls that are protecting the city. i guess this attack will take place very soon.
what do you guys think?