Major Graves (William Windom) is suspicious of the General (Andrew Duggan) and his plans to detonate a nuclear device in the Utah desert. Because of his suspicions, he invited David to come to the military base and poke around the place. Not surprisingly, he finds an alien plot...and aliens try once again to kill him. What is this plot? To have the nuclear test detonate an alien bomb....an antimatter bomb which could kill millions or more.
This is an okay episode. I say only okay because I don't really understand why the aliens simply don't just detonate their bomb themselves. And, if it's so powerful, why the small explosion near the end? I felt confused and have no doubt that some other viewers would feel equally confused. Otherwise, it's enjoyable and nice to see Duggan and Windom as guest stars.