CACs no longer need updated until staff sergeant Published Dec. 7, 2012 28th Bomb Wing Public Affairs ELLSWORTH AIR FORCE BASE, S.D. -- Servicemembers are no longer required to renew their common access cards at the rank of senior airman due to the recent Defense Enrollment Eligibility and Real-time Automated Personnel Identification Systems software updates. Airmen are now required to renew their CAC at the rank of staff sergeant. For more information, call the DEERS/ID card office at (605) 385-2427.