Austrian army tests out air attack early warning sound detector system.
Title reads: "Austria".
Austria tries out new sound detector; an air attack early warning system.
M/S of Austrian army officer shouting commands - a troop of soldiers run out of barracks. L/S of aeroplanes flying over head. Various shots of sound detector. It is a large device which rotates on a podium. Four men operate it. It is covered in dishes.
M/S of antiaircraft guns being fired. C/U of officer looking through telescope. M/S artillery being fired. Aerial shot of other aeroplanes in flight. C/U of crew inside interior of plane.
More shots sound detector.