Abstract-The problem of managing a fleet of quad-rotor drones in a completely unknown environment is analyzed in the present paper. This work is following the footsteps of other studies about how should be managed the movements of a swarm of elements that have to stay gathered throughout their activities. In this paper we aim to demonstrate the restrictions of a system where absolutely all the calculations and physical movements of our elements are done by one single external element. This is made possible thanks to a set of command rules which can guide the drones through various missions with defined goal. This strategy is based on a simultaneous usage of different data: