
MIRV   Multiple, Independently targetable Re-entry Vehicle

NATO   North Atlantic Treaty Organization

NAVSTAR   Navigation Satellite Timing and Ranging

NORAD   North American Air Defense Command

NSA   National Security Agency

NSC   National Security Council

NTC   National Training Center

"O" Group   Orders Group gathering of officers to receive commander's 
directions

OJCS   Office of the Joint Chiefs of Staff

OTH   Over-The-Horizon

OTHR   Over-The-Horizon Radar
