My nitpicks are as numerically proceeds:
1) The pole in Mallory's hand during the episode's inception shifts from his right hand to his left hand briefly.
2) Dr. Diana Davis is walking behind the rest of the covey during the denouement, but she then appears beside Mallory in the sequential scene.
Why do you have to number your nits...and announce them?
If they had included another piece of equiptment, they would have been able to tell that the Geiger from the teaser wasen't 'theirs', all they had to use was a Geiger counter ;)
Then they'd know there were two of em ;)