Starting in the early 1970s the Air Force took its first steps at looking at a conventional war in Europe. In late 1975, RAND Corporation completed a study that examined the merits of additional manned aircraft, remotely piloted vehicles, and stand-off munitions for improving air-ground capability in NATO. A follow-up two-day workshop at RAND studied what vulnerabilities the Warsaw Pact might have to NATO airpower, which was followed by a series of additional studies that clearly demonstrated their reliance on the continued movement of supplies. Air planners were beginning to look for ways to best employ these new weapons at the same time Starry was working on the extended battlefield concepts.