Aircrew Breast Insignia Wings. The United States Navy, United States Marine Corps and U.S. Coast Guard both issue the same version of the Aircrew Badge. The badge is a variation on the Naval Aviation Observer Badge with the letters AC centered on the badges front. Known respectively as the Naval Aircrew Badge and Coast Guard Aircrew Badge, personnel obtaining the decoration must undergo extensive training in flight operations of naval aircraft. Such training includes weapons management, electronic warfare, and water survival.