Spiral #2 of the PE modification integrates, tests, and fields an integrated battlefield air picture, an integrated ground picture, and legacy waveforms. The modification includes the Multi-Functional Information Distribution System Joint Tactical Radio System (MIDS JTRS) radio set with the Link-16 Waveform, the Enhanced Position Location Reporting System (EPLRS) waveform, and 2 other waveforms to be determined under the Digital Data Link (DDL) MN-37120 as directed by OSD. Funding Control for DDL was transferred from the A-10 Program Office to the Tactical Datalinks, Gateways, and Network Management (TGN) program office at Hanscom AFB MA, but it is still part of the PE modification. The Link-16, EPLRS, and other waveforms provide connectivity to the digital battlefield to ensure joint forces communication, reduce fratricide, and interoperability via forward command and control platform centers. Installation of Group A and B kits for Digital Datalink (MN-37120) will be paid for as part of this modification. The PE program may pursue other alternative data link technologies to avoid schedule delays if the currently projected MIDS JTRS terminals prove to be unavailable.