Danny, Irene, and Joe decide to take matters into their own hands and stealthily break into the lab to recover the probe. The probe's absence is realized which leads to Colonel Twist, the commanding officer of the two guards, to delusively believe the device has been stolen by a foreign power. As he is being confronted by Twist, the Professor realizes the trio of friends are responsible. He informs Danny that without destroying his notes detailing the creation of ISIT, either the Soviet Union or the United States military could still recreate it. While the local National Guard arrives to secure the house against foreign spies, Danny and the Professor make their way to the probe's controls and use it to cause a fire that destroys both the notes and probe.