While Hodges is working with the bomb fragments, Henry calls him "Crazy Harry ". Crazy Harry is the name of a Muppets who blows things up.
Elizabeth Shue (playing Julie Finlay) and Lea Thompson (Jennifer Rhodes) were together in "Back to the Future II" and "Back to the Future III" as Marty McFly's girlfriend and mother respectively.
Lea Thompson and Paul Guilfoyle previously worked together in Howard the Duck (1986)
Although in the credits, George Eads does not appear in this episode.
John Doe (the bomber in this episode) is in real life from Boston but his passport says Watertown, MA ... the same place the Boston Marathon bombers were caught.