Day 4: 11:00 P.M.-12:00 A.M. - S4-E17
Stupidity: When the couple is in the plant they call Jack on the cellphone, he instructs them to open the case and separate the book from the activation device. This was stupid, he should have told them to destroy it, since the codes had changed the moment Air Force One crashed, and it would take about 1 hour to make this work. This is explained later on in the show.
Stupidity: Why did Nadira decide to rewire Circuit instead of simply destroying or dismantling him? If she decided to simply destroy him, then Ransik and his army would have been victorious against the Power Rangers.