The number of agents used depends on a number of factors. Basic surveillance on an individual being followed from home or an uncomplicated work situation can be conducted by one agent. More complicated scenarios, such as following someone from a high rise office building, or airport or hotel require an additional agent. Other factors in which we may recommend a second agent includes fast and aggressive drivers and extra alert drivers who always watch the rear view mirror. Of course an additional agent increases the cost of the surveillance. This situation should be discussed and will be considered in determining your budget.