They do extensively employ civillian "yard birds" to do maintenance. In WWII era, they had minority sailors and conscripts on government payroll to do chipping

They do extensively employ civillian "yard birds" to do maintenance. In WWII era, they had minority sailors and conscripts on government payroll to do chipping and painting. Since then, they have been steadily outsourcing an increasing amount of this work to civillian contractors.