Sustainment Brigades provide echelon-above-brigade-level logistics. On its rotation to South Korea, 3rd ABCT, 1st Armored Division deployed its supply support activity (SSA) common authorized stockage list (CASL) as well. The CASL allows the ABCT to draw additional stocks beyond its pipeline of materiel from GCSS-A. The DoD-level Global Combat Support System includes an Army-level tool (GCSS-A), which runs on tablet computers with bar code readers which 92-A specialists use to enter and track materiel requests, as the materiel makes its way through the supply chain to the brigades. This additional information can then be used by GCSS-A to trigger resupply for Army pre-positioned stocks, typically by sea. The data in GCSS-Army is displayed on the Commander's Dashboard —Army Readiness-Common Operating Picture (AR-COP). This dashboard is also available to the Commander at BCT, division, corps, and Army levels.