349th Maintenance Group member retires after 21 years of military service Published Aug. 28, 2015 By Staff Sgt. Cindy G. Alejandrez 349th Public Affairs TRAVIS AIR FORCE BASE, Calif. -- Tech. Sgt. April Cofield, maintenance training manager, with the 349th Maintenance Group, retired after 21 years of military service, August 22, 2015. Cofield was described by her supervisors as the "muscle" in ensuring unit training readiness. She was also praised for her professionalism, leading by example in fitness and for providing invaluable mentorship. Her brother, Anthony Cofield, said "I know that my family is very happy for April." He added that her accomplishments are a testament to how hardworking and dedicated she is.