20th Maintenance Group 20th Component Maintenance Squadron The 20th Component Maintenance Squadron supports a combat-ready wing of approximately 79 F-16C Fighting Falcons and equipment. It maintains jet engines; accessory; and avionics components and systems; and a test, measurement and diagnostic equipment laboratory in support of three fighter squadrons. 20th Equipment Maintenance Squadron The 20th Equipment Maintenance Squadron focuses efforts of approximately 500 assigned personnel in 15 Air Force Specialty Codes and a $5 million budget to support three combat ready F-16C Fighting Falcon squadrons. It maintains aerospace ground equipment, armament systems and munitions for worldwide deployment. The 20 EMS performs aircraft phase inspections, corrosion control, engine oil analysis, nondestructive inspections and munitions storage and accountability, in addition to fabricating parts and tools.