Every pegasus in Cloudsdale dreams of becoming a Wonderbolt, colts and fillies alike. All parents reinforce it, saying, "Wonderbolts study hard, Wonderbolts practice every day, Wonderbolts look both ways before crossing the runway." The most dedicated and brightest ponies make it eventually.
But they don't tell the reserves about the traditions the main team holds near and dear.
Nor do the reserves tell the main team of their previous experience with certain nicknames.
Spitfire remembered when Rainbow Dash had told her the story of her old nickname, "Crash," and how it effected her performance in Ponyville as a result. So now she goes to see why another up-and-coming reserve member threw out his badge on his first day.
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Written moments after watching the episode, "Newbie Dash," and based off of a true story.