Operation: Dark Knight was a secret government programme developed by the United States after the arrival of the Taelons on Earth.

It consisted of soldiers who were declared missing in action but were actually part of a strike force that waited to see the true intention of the Taelons. If the Companions proved to be hostile, the members of Operation: Dark Knight were charged with attacking them. One of its members was SI War survivor Liam Neville Kincaid. The members of the group ambushed Liberation resistance members that had uncovered a Jaridian Probe that had crash landed on the Eastern Coast of North America. After securing it, the resistance members were captured by Operation: Dark Knight and interrogated at their secret mountain base. (Episode: Message in a Bottle)