They learnt the hard way. In 1992 they made "Recruits" and gave cameras full access to garda recruits at home and in college. It went through their ups and downs. A great series but the subjects got no peace when they were on the beat after, as every scrote knew their name, their mothers name, if they could run fast or not etc.
The Head of the college at the time went on to become Comissioner.