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• SECRET MEETINGS 


  This communication is pre-arranged to pass important and vital messages which should be

  immediately acted upon
• SHADOW


  This refers to the act of the surveillance of following his/her subject to detect criminal activities, to

  establish the association of subject, to find a wanted person and many other purposes.
• SURVEILLANT


  It is the person who conducts the surveillance or performs the observations.
• ROOING


  t is a kind of undercover work wherein surveillant assumes different rules and identity in order to

  obtain information.
• MOVING SURVEILLANCE


  It is performed by foot or by the use of any transportation vehicle in order to observe the

  subject.
• COVERT SURVEILLANCE


  This is a type of surveillance conducted to a subject who is unaware that he/she is

  under surveillance.
• OVERT SURVEILLANCE


  This occurs if the subject is aware that he/she is under surveillance.
• SURVEILLANCE


  It is defined as the discreet observation of persons, places, and bagels for the purpose of obtaining

  information concerning the identities or activities of criminals
• TWO-MAN SHADOW 


  This is easier for the surveillance to fully cover the subject.
• FIXED SURVEILLANCE 


  This is usually performed when surveillance is directed to a particular building or premise. The

  surveillant is immovable in place while observing his/her subject