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Department of Defense the U.S. federal department of the executive branch of government responsible for national security, military policy, and military forces. The Department of Defense includes the Army, Navy, and Air Force.
DOD abbreviation of "Department of Defense."
Global Positioning System a public satellite navigation system designed and controlled by the U.S. Department of Defense that provides an accurate global time reference and is used to determine a precise location on Earth.
GPS abbreviation of "Global Positioning System," a public satellite navigation system designed and controlled by the U.S. Department of Defense that provides an accurate global time reference and is used to determine a precise location on Earth.