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Brooks , briefing reporters at the U . S . Central Command headquarters , also disclosed that Marines had broken up violent clashes on Wednesday in Tikrit , Saddam ' s hometown .
 Tikrit, Saddam ' s hometown, U . S . Central Command, Brooks, reporters at the U . S . Central Command headquarters, Marines, Saddam, the U . S . Central Command headquarters
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 Tikrit, Saddam ' s hometown, U . S . Central Command, Brooks, reporters at the U . S . Central Command headquarters, Marines, Saddam, the U . S . Central Command headquarters