68039
After graduating with Class 64A , he was assigned to the Fighter Test Branch of Flight Test Operations at Edwards and completed three years flight-testing the McDonnell F-4C Phantom , Northrop F-5 A Freedom Fighter , and General Dynamics F-111 A Aardvark .
 Test, Test, McDonnell, Northrop, Dynamics
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Test, Test, McDonnell, Northrop, Dynamics