In addition to the new team, the prosecution said it also created a "filter team" — led by Assistant State's Attorney Kristin Blumer — which "screened evidence reviewed by the clean team; interviewed witnesses before they interviewed with the clean team; reviewed motions before providing those motions to the clean team; spoke to defense counsel on behalf of the clean team; as well as various other tasks to ensure that the members of the clean team were not exposed to immunized testimony."