Exploitation of aerial photographs Modern weather story, structure of storms; A-Primary circulation B-Development and characteristics of atmospheric waves Celestial navigation, interpretations of bearings, lines of position and fixes Sperry Gyrosyn compass Explosive decompression Don't drop those tanks to soon Vleugels waken over Nederland, de opleiding en het werk van de Luchtmacht First aid, Part 4, Resusitation, Mouth tot mouth, Mouth to nose fighter has crashed gyroscope becomes a compass Position finding on the earth gyro compass, principles of the gyroscope