Principles and planning of tactical air operations, Principles part 1 Communist propaganda "Yankee go Home" USAF product improvement program (PIP) Meteorology Ice formation lubrication of military vehicles, Part 1, Principles Nike Ajax battery, Defense against electronic countermeasures gyro compass, The gyroscope and the earths rotation gyro compass, The gyroscope and gravitation Industrial plant protection In your interest principles and planning of tactical air operations, Part 2, Planning (Geen titel) First aid for aircrew cassualties