As an expert in aerospace terminology, I can tell you that the term "Smarties" is not a commonly used term for rockets in the United States. It's possible that there might be some confusion or a specific context in which this term is used, but it's not a standard term within the aerospace industry or among rocket enthusiasts in the U.S.
However, there is a brand of candy called "Smarties" that is popular in the U.S., which are small, sugar-coated tablets. If someone were to use the term "Smarties" to refer to rockets, it could be a playful or informal way to describe something small and colorful, perhaps drawing a comparison to the candy's appearance.
To clarify, the term "Smarties" is not an official or widely recognized term for rockets in the United States.
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