Geand Jury Empanelled

unless this letter is faked, it looks legit to me. sauce. Geoffrey S. Berman is a United States Attorney.

https://www.lawyerscommitteefor9-11inquiry.org/7-nov-2018-u-s-attorney-geoffrey-berman-will-comply-with-18-usc-section-3332/

https://en.m.wikipedia.org/wiki/Geoffrey_Berman