Stardate 2262.804
Not that I blame Uhura for it, but the rumors were dangerously off. The supporters of the Admirals apparently thought the best way to prevent them from being executed was to capture the Emperor and forcing him to order their release.
The attempt failed, but Bones was badly injured and, for all intents and purposes, Chekov is dead. If he wasn't in a cryogenic stasis tube, his life expectancy would have to be measured in minutes. The attempt is about to be made to place his consciousness into the android body that was made for him.
