At 100-years-old, David Berry is one of the last surviving wartime airmen who flew the fragile Fairey Swordfish biplane, which helped sink Hitler's Bismarck battleship. Now engineers from the charity Navy Wings are fighting to return a rare example of the Royal Navy's last biplane to the sky in time for David to see it. At the same time, 250 miles away, another team are determined to make the US Navy's last biplane fly again.