s Investigative Assistance or Technique Used 1. Used. but did not hap 3. Helped, substantbIN 2. Hdped. mhirmay 4.Absoldaly essential . For Sit. Invest Amin by other FO(a) indedire A. S. C. D for =nese:tag FO ma PO NT Rale PO NT Rare PO TAT Ram PO IAT Fin. Attlysl Lab. Meld ea UOD - Nmeeeit wo,