721ST AIRCRAFT MAINTENANCE SQUADRON Current as of April 7, 2022. The 721st Aircraft Maintenance Squadron is located as a tenant unit on Ramstein Air Base Germany. The squadron is assigned to the 521st Air Mobility Operations Wing headquartered at Ramstein AB. Lineage: The 721st Aircraft Maintenance Squadron was constituted on Aug. 19, 2008 and activated on Sep. 4, 2008. Mission: Safely advancing Rapid Global Mobility as a trusted partner in mission execution. Vision: Confident, Disciplined & Empowered Maintenance Family. Motto: 7-2-1….NEVER OUTDONE! Related Sites: Ramstein Air Base Website