A joint program by the U.S. Air Force and Xwing Corporation has demonstrated fixed wing cargo carrying capability in a point-to-point flight between two airbases using a specially modified Cessna 208B Grand Caravan. * * *Want to watch this podcast as a video? This Week in Engineering is available on engineering.com TV along with all of our other shows such as End of the Line, Designing the Future, Manufacturing the Future, and the Engineering Roundtable.