3999
More recently , " Bodyguard " follows the story of a war veteran suffering from PTSD who becomes a specialist protection officer in the Metropolitan Police Service , and assigned to protect an ambitious Cabinet minister .
 Metropolitan Police Service
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Metropolitan Police Service