From inside a plane, the camera faces forward toward a stewardess in a yellow neckerchief, demonstrating the use of an oxygen mask. The plane’s cabin is full of passengers, most facing forward in their seats. Another stewardess stands farther down the aisle of the plane. The camera rests just above the top of a seat back. The plane’s ceiling is visible, showing lights and air nozzles. The oxygen mask is circular and attached to tubing.