Complex sentence: The rate was previously designated as Aviation Antisubmarine Warfare Operator, however under the CNO directed Helicopter Master Plan, all 78XX Aircrewmen were redesignated as' Naval Aircrewman (AW).
Split into simpler sentences: The rate was previously designated as Aviation Antisubmarine Warfare Operator. However under the CNO directed Helicopter Master Plan, all 78XX aircrewmen were redesignated as' Naval Aircrewman (AW).