There is an episode of the excellent Inside Skunkworks podcast about the Lockheed team that is building the aircraft for these tests: https://soundcloud.com/us

There is an episode of the excellent Inside Skunkworks podcast about the Lockheed team that is building the aircraft for these tests: https://soundcloud.com/user-291478498 https://soundcloud.com/user-291478498 It's well worth a listen, as are the other episodes in the series.