Derek Mayer returning as special agent in charge at US Secret Service Chicago Field Office

CHICAGO (WLS) -- A familiar face is back at the U.S. Secret Service Chicago Field Office.

Derek Mayer is returning as the special agent in charge after working in private security for the past year.

ABC7 Chicago is now streaming 24/7. Click here to watch

In his first interview as SAC, he tells the I-Team it's an opportunity he couldn't pass up.

For the past year, while working as the chief security officer and vice president of executive protection for P4 Companies, Mayer acted as ABC7's law enforcement expert, which he is unable to continue to do in his new role.