When Reddington interrogates the man he believes to be Berlin, they make references to "The Campolongo Incident". Jim Campolongo is the Supervising Producer.
Alan Alda was nominated for "Outstanding Guest Actor in a Drama Series" at the 2015 Primetime Emmy Awards, but did not win.
Diego Klattenhoff (Donald Ressler) & Jason Butler Harner (Walter Gary Martin) also worked together on episode 3.4, Game On (2013), of Homeland (2011) as Mike Faber & Paul Franklin respectively.