Update: Lockheed Martin, Pentagon establish bi-directional communications between fifth-generation aircraft, ground units 11 May 2021 by Pat Host Lockheed Martin Skunk Works and the Pentagon for the first time established bi-directional communications between fifth-generation aircraft in flight while also sharing operational and sensor data to ground forces during a recent test, according to a company statement on 3 May. This flight test, named Project Hydra, linked a Lockheed U-2 Dragon Lady high-altitude reconnaissance aircraft, five Lockheed Martin F-35A Lightning II Joint Strike Fighters (JSFs), and a Lockheed Martin F-22 Raptor in the air and provided real-time fifth-generation data to operators on the ground. The flight test leveraged an Open Systems Gateway (OSG) payload aboard the U-2 to connect the F-22 to the five F-35As via the native Intra-Flight Data Link (IFDL) and the Multifunction Advanced Data Link (MADL). The target tracks were also transmitted by, and through, the U-2 into the fighter avionics and pilot displays, the statement added.