In approximately 18 BBY, Admiral Ar'alani's Picket Force Six embarked on a mission to the listening post KR21. This operation was part of the broader Mission to the Vak Combine, a final sweep against the Nikardun Destiny. Rather than encountering a Nikardun fleet, they discovered wreckage of Nikardun vessels, obliterated by Asteroid missile platforms. Their investigation of the base revealed its conversion into a shipyard for the Grysk Hegemony.