1. Background. Current information-based dynamic battlespace environments require secure airborne data communications with other aircraft, Command and Control (C2) agencies, and ground-based forces. Link 16 Tactical Data link (TDL) and secure UHF SATCOM will provide aircrews the ability to report and receive battlespace information from monitoring C2 agencies such as position of other aircraft, weather, threat, mission events, mission status, task completion, resource status, etc. This increased situational awareness allows agencies the ability to track mission progress and facilitate rapid decisions and adjustments during mission execution. Additionally, real-time aircrew reporting will enable information exchanges with global and theater Air and Space Operations Centers (AOC) and Mobility Air Force (MAF) assets (to include those that are airborne), which will improve synchronization of supporting and supported forces. 2. Source of Need. Air Mobility Command (AMC) Requirements and Planning Council; 2012-2013 ARC WEPTAC Conference; 2014 ARC WEPTAC Council. 3. Impact If Not Funded. Without Link 16 TDL and UHF SATCOM, aircrew flexibility and situational awareness is inadequate in current and evolving mission environments. Critical battle space information is not available to aircrew members or to monitoring C2 agencies tasked with execution of the assigned missions. Additionally, the inability to rapidly exchange critical information will further hamper battle space driven adjustment to mission requirements and increases the potential for damage to the aircraft and/or loss of life.4. Units Impacted:All C-17 UnitsAll C-5B Units