Approved By The U.S. Institute Of Heraldry, USA Made, M-37 Hallmark Official Issue, Navy Regulation Chapter 5, Section 2, Article 5201.3, Approved For Wear, USA Made Official Gold Finish Worn On Official United States Navy Dress And Formal Uniforms 2 Pins On the Back For Securing It To The Uniform To qualify for the NFO insignia, a service member must have completed officer aviation training and be qualified as a systems operator on board a Naval aircraft. Such qualifications include weapons system operations, airborne tactical data system operations, electronic warfare, and airborne navigation.The insignia originated in the 1930s and evolved from the Naval Aviation Observer insignia. The main reason for creating the NFO insignia in 1965-1966 was to recognize the higher degree of training required for naval flight officers, compared to other airborne support personnel. Measures: 1 ½" x ¾" x 1/8".