film: out of the past

Lin’s little move here–the way she spins around–is very much like airbending. 

Given how we’ve seen the metalbending police use a variety of spins and things when they’re up in the air, and given the overall Team Avatar dynamic, it would make sense that Lin would pick a few things up from Tenzin and Aang. 

And, given how everyone else in Republic City (the pro-benders especially) likes to mix and match fighting styles, it should come to no surprise that a lot of United Republic benders have learned to become light on their feet.