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The Altair was a solid-fuel rocket with a fiberglass casing , initially developed for use as the third stage of Vanguard rocket s. It was manufactured by Allegany Ballistics Laboratory ( ABL ) as the X-248 .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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