Have you never been fired before?
It means security escorted him out in case he "made a scene", if it was done like any other normal "escorting out of the building" that is.
>Wow! Fired just for seditious plotting against POTUS??!! What's the FBI coming to these days??!!!
I know right!!
https://www.washingtontimes.com/news/2018/jun/19/peter-strzok-escorted-out-fbi-building-reports/
http://thehill.com/policy/international/393086-us-pulls-out-of-un-human-rights-council?__twitter_impression=true&__twitter_impression=true