The Blues watch the Reds play with their radio, at a loss for a motive. Caboose explains that they are talking about the distress signal, an explanation he got from "Andy". The Reds are discussing the distress signal, which Simmons cannot pinpoint due to the substandard equipment. Caboose introduces Tucker and Tex to "Andy": the deactivated bomb. Predictably, it won't talk to them. However, Gary the terminal knows Andy very well. This episode also features another distant character. (thetvdb.com)