349th Mission Support Squadron member retires after more than 30 years of service Published May 6, 2015 By Capt. Samuel Lee 349th Public Affairs TRAVIS AIR FORCE BASE, Calif. -- Congratulations to Senior Master Sgt. Juan Cruz and family who celebrated his career during his retirement ceremony May 2, 2015 here at Travis Air Force Base, Calif. Cruz concluded his 31 years of service with the 349th Mission Support Squadron. Thank you for your service and dedication to the mission.