There is no evidence that Peter Strzok ever worked or served in any FBI field office. Nor is there any evidence that Strzok attended the FBI academy in Quantico, Virginia. There is no evidence Strzok ever graduated from Quantico. Any of these would indicate his attachment to the FBI but they cannot be found.
Strzok’s history shows that he left the Army and was immediately assigned to the White House. (See picture above of Strzok in the late 1990’s in the Clinton White House.) When did Strzok have time to attend the FBI academy if he went directly to the White House?