When shown a picture of the device the division agent (Dina) kills to obtain in the opening scene, the first thing Birkhoff says to Michael and Nikita is "Whoa, nomad... forget it... what is it?". Birkhoff is commenting on the likeness of the device (a "helium 3 replicator") to the likeness of the deep space probe that Kirk and the Enterprise crew encounters in "The Changeling" (season 2, episode 3) of Star Trek (1966). The probe was called NOMAD.