67065
Without radio communication , Armstrong flew south to Nellis Air Force Base , past the control tower , and waggled his wings , the signal for a no-radio approach .
 person: Armstrong; location: Nellis Air Force Base
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Armstrong, Nellis Air Force Base 
Answer:
 person: Armstrong; location: Nellis Air Force Base