:rainbowdetermined2: Who is the best flyer? Rainbow Dash believes that she is but Flitter thinks Rainbow isn't the only fast one in Equestria. Flitter wants to pull off the greatest (and hardest) move in Equestria…The Sonic Rainboom! Rainbow Dash did it…can Flitter? Tell me if you want more…don't be mad that it's bad…it's my first story!