Shots of men asleep in weather plane during flight. CU of man doing paperwork during flight. PAN across table from hands of man, past papers, coffee mug, to another man smoking, looking out of port. HACU of man doing paperwork, wearing earphones. LAS of man standing under plexiglass dome, setting up instrument. Shot of silhouette of pilot smoking seen against lighted windscreen, clouds visible through window in distance. Dark shot of hand on steering wheel, holding cigarette. Shot of Arctic Ocean through windscreen from beside pilot. Interior shot of airborne radiation thermometer aircraft, technicians, instruments. MS of thermometer dial, swish PAN to recording graph. Interior shot of DC-4 cockpit, co-pilot, pilot, ice crystal forming on windscreen. Shots of ice reconnaissance radar screen, operator. CU of radar screen. Shot of port wing, engines, arctic terrain far below.