The destruction of the science vessel USS Grissom by Kruge's Klingon Bird-of-Prey above the Genesis Planet in 2285, with the loss of Captain Esteban and all aboard.
The Grissom is lost in Star Trek III: The Search for Spock. The small science vessel, under the cautious Captain J.T. Esteban, is sent to survey the newly formed Genesis Planet. David Marcus and Saavik beam down from her and find Spock's empty coffin and, later, a Vulcan child.
The Klingon commander Kruge, who wants the secret of Genesis as a weapon, arrives cloaked. He orders his gunner to cripple the Grissom so that prisoners can be taken. The shot instead destroys the ship outright, and Kruge kills the gunner for it.
The attack leaves Marcus, Saavik and the young Spock stranded on the planet, where the Klingons capture them. Kirk reaches the system in the stolen Enterprise to find no trace of the Grissom.