It should be noted that UAVs have an advantage due to their increased capabilities with respect to range, high technical resistance, and reliability in operation. Therefore, the first significant difference between UAVs and FAOs is that UAVs have the capability of long-term continuous operation, while human beings get tired over time and the quality of their work decreases. Furthermore, the forward artillery observer is not always able to determine the difference between the target and the point of impact (due to incorrect assessment, poor visibility, blind spot, etc.) – and thus the FAO can never achieve the same level of accuracy in its assessments as the UAV can.