In approximately 18 BBY, Picket Force Six, commanded by Admiral Ar'alani, embarked on a mission to listening post KR20. This was a component of the Mission to the Vak Combine, specifically a cleanup operation directed at the Nikardun Destiny. Upon their arrival at the listening post, they discovered it abandoned, along with the wreckage of nine Nikardun vessels. An asteroid missile platform was responsible for the destruction of these ships, and the base was being transformed into a Shipyard for the Grysk Hegemony. After investigating the base, they then initiated a mission targeting the final Nikardun installation, listening post KR21.