On October 18-19, 2016 traffic managers from Washington Air Route Traffic Control Center (ZDC) met with Charlotte Air Traffic Control Tower (CLT ATCT), FAA Headquarters and NASA personnel in the Charlotte ATD-2 lab (CLTlab) for the fourth Shadow Evaluation. On the first day, the team familiarized the ZDC personnel with the CLTlab and the latest ATD-2 tools and shadow evaluation process. On the second day, the team reviewed the plan to integrate ATD-2 technologies with the operational Time-Based Flow Management (TBFM) system for field demonstration, and the airspace scenarios that the electronic coordination technology would likely use. Strong collaboration and fast progress in this meeting resulted in ample time for system shadow familiarization. On October 20, CLT ATCT, American Airlines CLT ramp, CLT airport operations, FAA Headquarters and NASA personnel met in the CLTlab for a follow-up session to clarify ATD-2 requirements for data exchange and integration. NASA's ATD-2 project continues to benefit from the dedication and collaborative spirit of our Field Demonstration Partners. (POC: Al Capps)