Important: The person alleging forgery must complete this form in longhand. This affidavit is made voluntarily for the purpose of establishing the fact that my signature is a forgery. 7.Do you know who forged your signatures? APRI provides training and practical assistance to prosecutors on critical issues in the criminal justice system. Your Affiant knows from my training and experience as a narcotics investigator that instant cold packs are used in the process of making.