Flying Saucer- Air Force Uncovers Model Mystery Ship; August 1949; In Glen Burnie, Maryland, police investigate a prototype flying-saucer-like helicopter in a barn. Then in a field the crashed remains of another abnormal helicopter are investigated, and we see different views of it.

News in Brief; In the Swiss Alps, we see soldiers remove camouflaged doors in the mountain wall to allow a truck to enter a series of military tunnels. We see trucks and people move about the tunnels and a man loads weapons onto a shelf.

Florida; A Garwood boat designer launches his model for the Venturi, a ship deemed to be unsinkable, into a river. We then see a full-sized Venturi from different angles, including a shot from between its twin hull.