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The strategic bombing proponents within the USAAF , called the Bomber Mafia by their ideological opponents , had established in the early 1930 s a policy against research to create long-range fighters , which they thought would not be practical ; this kind of research was not to compete for bomber resources .
 USAAF, Bomber Mafia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 USAAF, Bomber Mafia