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Whistle
A whistle is purely an emergency tool. In the unfortunate event that you do get lost you can only yell for help for so long. A whistle is a low energy way to make noise so help can find you.
A whistle is purely an emergency tool. In the unfortunate event that you do get lost you can only yell for help for so long. A whistle is a low energy way to make noise so help can find you.