- "Alliance Code Grave, Luke... Abandon reconnaissance mission!"
- ―Massassi One
Code Grave was an alert level utilized by the Alliance to Restore the Republic during the Galactic Civil War. Any mission given the alert level was made mandatory.
Luke Skywalker had to return to his native planet of Tatooine under the orders of the Rebel Alliance via Massassi One via this alert level, although to Skywalker's reluctance.