Crossword clues for Defense arm. 5 letters:FLEETDefense arm.ANNANHe warned that pressure to deploy missile defense could lead to a new arms raceSAFDefense arm: Abbr.NAVDefense arm: Abbr.NAVYDefense armRAFUK defense armRAFBritish defense armSACDefense arm: Abbr.NAVIESNational-defense armsUSAFDept. of Defense armAIRFORCEDefense armUSNDefense arm.USNDefense Dept. armUSNArm of defense: Abbr.