<prompt> Translate the following text to EnglishMafunzo ya wafanyakazi katika makundi ya usimamizi wa usalama wa kati, ambao wengi wao walikuja kwenye makundi yao na utaalam mkubwa wa kiufundi, yalikuwa juu ya kuweka ujuzi wa wafanyakazi na maarifa ya sasa.  <response>: The training emphasis for staff in the central security management groups, many of whom came to their groups with significant technical expertise, was on keeping staff skills and knowledge current. 