The CR90 corvette named Coffey served as an escort vessel for the corvette Glazer, which was engaged in a technology transfer to the Rebel Alliance Nebulon-B frigate called Xerxes. The Coffey was operated by the Nharwaak. In a similar manner to other Nharwaak ships, the Coffey was ambushed by Imperial forces commanded by Grand Admiral Demetrius Zaarin in the vicinity of Mylok IV.