The invention concerns a spotlight for use in bodies of water. A first set of rules for the decision logic is received. When a threshold value of the second variable is exceeded, a third variable characterizing the combustion process is detected. Alternatively, a combining gate may be included within the slice to combine the output of one slice with the output of another slice. In the case where a malfunction has occurred in an FCU that performs flight control on the unmanned aerial vehicle, the ground facility is capable of causing another FCU to take over flight control function from the FCU.