Several large mushroom clouds from atomic bomb test explosion . Air force plane flies above cloud to acquire test samples. Silhouette of men’s heads looking up at cloud. Aerial shot of plane in flight. POV shot of plane going into cloud. Shot of pilot in cabin. Pilots putting on various eye gear to test them against light from atomic blast. The men watch an atomic explosion then turn back to scientific devices to measure effects. Various aircraft are placed around blast site to test.