This operator/supervisor level course provides initial and job enhancement training to unit supply clerks and supervisors in the Property Book Unit Supply Enhanced (PBUSE) automated supply procedures and policies, as used for property accountability. This PBUSE-S4 training includes, but is not limited to system security; unit parameters; system utilities; supply request processes; unit load management; automated hand receipts; automated component listings; replications and data synchronizations; code tables; serial number tracking and registration; property book transactions; MILSTRIP; PBUSE interface with other applications; and operation modes, stand-alone or enterprise. Prior to starting the course, participants are expected to have a clear understanding of the supply and maintenance management material obtained by participating in course OS-ULG or US-SPR.