A bombing of the Vulcan Learning Center by logic extremists opposed to a human child being raised as a Vulcan, in which the young Michael Burnham was briefly killed.
After the death of her parents Michael Burnham was taken in by Sarek and Amanda Grayson and schooled on Vulcan. A faction of logic extremists, who rejected any human presence in Vulcan society, set off a bomb at the Learning Center where she studied.
Burnham was dead for about three minutes. Sarek revived her with a mind meld that left part of his katra within her, creating a lasting link between them over great distances.
The attack is seen in flashback in the Discovery episode Battle at the Binary Stars and its consequences are explored in Lethe, where a later extremist tries to kill Sarek and Burnham uses the bond to reach him.