Tashina Guahar, Deputy Assistant Attorney General (DAAG) in the Department of Justice National Security Division (DOJ-NSD)
Tashina reviews, verifies and then gains signatures for submission. "Tash" also featured heavily in Page/Strzok texts.
Strzok supposed to report to Asst. FBI Director CoIntel Bill Priestap, who reports to McCabe then Comey.