5/5/3/4/2 mixed up steampunk with sci-fi other then that military operations are rarely as lax as shown so far are borderline incompetent with no backup even if MC did the raid right, improvement is a bit too fast and MC shouldn't know that he can bend other elements even if the way things played out they way described and even if he can it should be extremely hard for him to learn bending outside of fire given it is a small enough piece that nothing was affected while it might help him learn things like lava, lighting and varients I would say that make it so that it would be better to learn fire bending with minor abilities in other elements at best with a boost to variants.
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