Alpha One represented the utmost security authorization employed by the Imperial Military aboard the DS-1 Death Star Mobile Battle Station during the year 0 BBY. An Imperial officer possessing Alpha-One clearance had the authority to override all other ongoing orders, instructions, and automated sequences within a droid. Furthermore, they could initiate Imperial Protocol Alpha One to institute a new protocol with the highest precedence. Grand Moff Wilhuff Tarkin, in his capacity as the commander of the Death Star battle station, possessed this level of authorization.