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Davison Army Airfield or Davison AAF is a military use airport serving Fort Belvoir , in Fairfax County , Virginia , United States .
 Davison, Davison, Fairfax County, Virginia, United States
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Davison, Davison, Fairfax County, Virginia, United States