Interior shot in trailer at Atmospheric Research station showing technician speaking into radio, climbing to plastic roof bubble, looking out. CU of graph recorder inscribing intensity of lightning. Exterior shot of man in plastic bubble speaking into radio microphone. Interior shots of three technicians taking readings, speaking on radio telephone, taking notes. Profile MCS of man talking into microphone, pulleys of tape recorder spinning before him. CUs of graph reader, of hand adding notes to graph. HASs of two technicians at work in trailer. MS of radar scanner revolving. Shot of calibrated radar screen. Two exterior shots of man in plastic bubble on top of trailer. Two MLSs of trailer. GROUND TO AIR FOLLOW SHOT of light plane circling base, glimpses of trailers passing briefly before camera.