Star Trek III: The Search for Spock (1984)

Visible crew/equipment: When the Enterprise is exploding, a Klingon is shown flying over the helm. When he lands, a person's arm can be seen on the right side of the screen, trying to grab his foot. (01:14:50)

[The crew watches the Enterprise burn up in the Genesis planet's atmosphere.]
Kirk: Dear God Bones, what have I done?
McCoy: What you had to do, what you've always done, turned death into a fighting chance to live.

Trivia: During the bar sequence where McCoy tries to hire a ship, there is a cameo appearance by Tribbles, who appeared in the episode "The Trouble with Tribbles" from the original Star Trek TV series.

Question: The data for Genesis are transmitted to Kruge, however, later, he has one of his men murder David Marcus (Admiral Kirk's son) and demands Genesis from Kirk. He had already downloaded the data, so what additional information did Kruge want? (00:09:30)