"Blade Squadron: Zero Hour" is a short story by David J. Williams and Mark S. Williams, with art by Chris Trevas. The story, published in Star Wars Insider 160, is a sequel to the short story "Blade Squadron" and a tie-in prequel to the novel Aftermath.

It has also been collected in "Star Wars Insider Fiction Collection Vol. 1"

https://www.youtini.com/book/star-wars-insider-the-fiction-collection-volume-1