DG - SPA.DG.105(a) and AMC1 SPA.DG.105(a) para (f)
Firefighting - ORO.FC.230(d) and AMC1 ORO.FC.230(a)(2)(ii)(C) and (a)(2)(iii)(c)
First Aid - AMC1 ORO.FC.230(a)(2)(iii)(G)
And don't forget recurrent ground training as descibed in AMC1 ORO.FC.230(a)(1).
Also, security training (see AMC1 ORO.GEN.110(a)).