Weather Modification Technology

From the Department of Defense Manual "Weather as a Force Multiplier" "The essential ingredient of the weather-modification system is the set of intervention techniques used to modify the weather. The number of specific intervention methodologies is limited only by the imagination, but with few exceptions they involve infusing either energy or chemicals into the meteorological process in the right way, at the right place and time. The intervention could be designed to modify the weather in  a number of ways, such as influencing clouds and precipitation, storm intensity, climate, space, or fog."  Ch. 4, Concept of Operations