ULLS-S4 Operator/Supervisor Course (OS-ULS): This operator/supervisor level course provides initial and job enhancement training to unit supply clerks and supervisors in ULLS-S4 automated supply procedures and policies. The ULLS-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; government simplified acquisition procedures through the Government IMPAC card use, and multimedia training.