1. Why is Dirk beginning to distrust his situational awareness after his visit to the museum and George Papaaloa?
(a) He is seeing beady-eyed malefactors everywhere.
(b) He can't concentrate on business because he keeps thinking about Adrian.
(c) He is tired and hungover.
(d) He is feeling naïve and vulnerable after his encounter with Summer.

2. How does Admiral Hunter know that Dirk has never served on a submarine?
(a) ADM Hunter has never heard of Dirk.
(b) Dirk does not recognize the communications capsule.
(c) Dirk does not understand the significance of what he read.
(d) Dirk does not have the right military bearing.

3. Why does Dirk argue that the Martha Ann's bevy of detection equipment may not keep her safe come nightfall?
(a) She has no defenses, the sailors carry no more than sidearms.
(b) Her sensors are blind in the dark.
(c) The fog that supposedly comes up at night may blind the sensors.
(d) Any electrical malfunction will leave her defenseless.

4. What does Roblemann invent?
(a) A gene therapy that would allow humans to develop webbed hands and feet.
(b) A prosthetic fin for human use.
(c) A combination gill-lung that surgically attached to a human's chest.
(d) An underwater pump system big enough for a seamount.

5. How is the rescue team tracking the submarine's location?
(a) Following the line of the flag buoy Boland left in place.
(b) Using the electronic marker Boland placed from the Martha Ann.
(c) Using a metal detector.
(d) Using a chart and the geo-coordinates Boland marked.