USAF Master Maintenance Occupational Badge Solid Wood Plaque 16 Natural Oak Finish. This solid wood USAF solid wood plaque was acquired in an estate sale and is in beautiful condition. Occupational badges are reflective of a service member’s Air Force specialty. Criteria: General officers: Wear the basic badge, representative of the organization’s mission, upon entering a headquarters staff or command position, unless previously qualified for a higher-level badge. Wear the next higher-level badge after 12 months. Continue to upgrade to next higher level every 12 months. Officers: Wear the basic badge after graduating from technical school (or after attaining a fully qualified AFSC when technical school is not required). Wear the senior badge after 7 years in the specialty and the master badge after 15 years in the specialty. Enlisted: Wear the basic badge after completing technical school. Wear the senior badge after award of the 7-skill level, and the master badge as a master sergeant or above with 5 years in the specialty from award of the 7-skill level.