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nounthe federal department responsible for safeguarding national security of the United States; created in 1947type of:
Parts of dod
- "army"
- "ballistic missile defense organization"
- "bmdo"
- "casualty care research center"
- "ccrc"
- "darpa"
- "defense advanced research projects agency"
- "defense information systems agency"
- "defense intelligence agency"
- "defense logistics agency"
- "defense technical information center"
- "department of defense laboratory system"
- "dia"
- "disa"
- "dtic"
- "lablink"
- "national geospatial-intelligence agency"
- "national reconnaissance office"
- "national security agency"
- "navy"
- "nga"
- "nro"
- "nsa"
- "u. s. air force"
- "u. s. army"
- "united states air force"
- "united states army"
- "united states navy"
- "us air force"
- "us army"
- "us navy"
- "usa"
- "usaf"
- "air force"
- "usn"