Factual error: The picture of the bomb switch shows an Arduino Pro Mini. The Arduino Pro Mini was released in 2008, not in 1975. (01:21:20)
Suggested correction: SPOILERS: The ending of the film reveals that the Fizzle Bomber is an older version of the Agent, who still has a functioning time machine. This simply shows that he is using parts from the future for his bombs.
Factual error: As the camera pans over the evidence board, it shows a receipt for electronic parts. The receipt is from a store in India, since it includes places for VAT and Challan Id's. Also, the map is from several years after 1975, since it shows the JFK Express and Q trains at 34th Street. (The receipt is definitely noticeable without slow motion or pause. The map is harder). (01:24:15)
Factual error: The picture supposedly representing the 1991 Hamburg bombing is actually one of the Chernobyl disaster. (01:26:30)