The events of 9/11 as they unfolded through actual audio.
X-47B First to Complete Autonomous Aerial Refueling
PATUXENT RIVER, Md. (April 22, 2015) The X-47B successfully conducted the first ever Autonomous Aerial Refueling (AAR) of an unmanned aircraft April 22, completing the final test objective under the Navy's Unmanned Combat Air System demonstration program. (U.S. Navy video/Released)