The tactical applications (TacApps) teams initial analysis of the Battle Command Sustainment Support System (BCS3) has focused on setting up a BCS3 demo environment, analyzing BCS3 software code, ingesting available documentation, and understanding the specific data feeds upon which the National Enterprise Data Portal (NEDP) component of the BCS3 depends. Also included is an analysis of the Global Combat Support System Army data integration. The NEDP data feeds are typically delivered via flat file or direct database link. Frequency of delivery ranges from 15 min to 24 hr, though many fall in the 2 to 6-hr range. Data from April 2012 indicates a total BCS3 data throughput (including both user interaction and data feed consumption) of 0.12 kilobytes per second, which is very low compared with the throughput expected of the TacApps backend. Efforts are underway to confirm the validity and timeliness of this data. Further details of the analysis are contained within this report.