On reference stardate 2/1912 the Genser and five other vessels were escorting a convoy of neutronic fuel carriers to the rimward frontier when the ship's sensors detected a small object traveling on a parallel course to the convoy. The Genser continued on active duty but the whereabouts of her missing crew or the mysterious object was never determined. (FASA RPG modules: Federation Ship Recognition Manual, Star Trek IV Sourcebook Update)