David impersonates a Dr. Patterson and a Dr. Hammond, unlike his usual alias of David with a surname beginning with B.
In this as well as Prometheus Part II (#4.2), variations of the opening from The Six Million Dollar Man ("I've got a blow-out in Damper #3" - "Set your pitch to zero" - "Pitch is out; I can't hold altitude") are used in the dialog... obviously an in-joke by or for Kenneth Johnson, who served as a writer for both episodes and a writer/producer for The Six Million Dollar Man.
The episode was originally scripted as "Nuclear Cave-In."