▁valley ▁and ▁joined ▁the ▁Italian ▁Res istance . ▁He ▁was ▁put ▁into ▁service ▁in ▁the ▁Mag ist racy , ▁before ▁in ▁the ▁trib unal ▁of ▁Rome ▁and ▁then , ▁at ▁his ▁request , ▁he ▁was ▁transferred ▁to ▁the ▁Republic ▁Pro sec utor ▁Office ▁of ▁C alt an iss etta ▁where ▁he ▁remained ▁from ▁ 1 9 4 4 ▁to ▁ 1 9 7 8 . ▁In ▁the ▁Pro sec utor ' s ▁Office , ▁he ▁spent ▁most ▁of ▁his ▁magistr ate ▁activities ▁as ▁a ▁deput y ▁pro sec utor ▁before ▁and ▁chief ▁pro sec utor ▁then , ▁always ▁giving ▁clear ▁demonstr ations ▁of ▁high ▁professional ▁prepar ation , ▁independence ▁and ▁balance . ▁Since ▁the ▁ 1 9 6 0 s , ▁as ▁ev iden ced ▁by ▁his ▁de position ▁at ▁the ▁first ▁Ant im af ia ▁Commission , ▁he ▁realized ▁that ▁the ▁M af ia ▁had ▁under g one ▁a ▁radical ▁mut ation ▁and ▁that ▁it ▁had ▁nested ▁in ▁the ▁vital ▁gang lia ▁of ▁public ▁administration ▁by ▁cont rolling ▁its ▁proc ure ment , ▁rec ruit ment ▁and ▁management ▁in ▁general . ▁In ▁the ▁case ▁of ▁Pe pp ino ▁Imp ast ato , ▁he ▁was ▁the ▁first ▁to ▁realize ▁that ▁it ▁was ▁not ▁terror ism ▁or ▁suic ide ▁but ▁a ▁ma f ia ▁crime . ▁In ▁the ▁brief ▁period ▁of ▁his ▁administration , ▁the ▁Pro sec utor ' s ▁Office ▁of ▁Pal ermo ▁started ▁a ▁series ▁of ▁del icate ▁investig ations ▁in ▁which , ▁even ▁with ▁limited ▁resources ▁at ▁the ▁time , ▁he