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clandestineAdjectiveFormal secret and concealed: a base for clandestine activities dictionary.com
Humint
I heard that Bob Menna was involved in some clandestine activities. He would never tell.
Socio-cultural knowledge is one component of this tenet of COIN
Humint
Desertification.
Civil considerations
A black op is another term for a black operation - a covert operation typically involving activities which are highly clandestine and outside of standard military protocol.
The physical environments like the mountains and rivers dictate the economic activities of the human beings.
Organizations
Very few, if any, activities are considered particularly unsafe in earthquake areas. However, some activities, such as construction projects, require special considerations and designs to prevent potential damage in the event of an earthquake.
special programs could become available to get individuals who commit crimes to become involved in meaningful activities in society, so this would prevent future criminal activities from occurring.